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21415452410550 = 23521190727775153
BaseRepresentation
bin1001101111010001011000…
…11011110000001010110110
32210211022000200220002102110
410313220230123300022312
510301332321304114200
6113314042323351450
74340133606010362
oct467505433601266
983738020802373
1021415452410550
11690727364a060
12249a55b822586
13bc46123988b3
14540728bb62a2
152720e98c2b50
hex137a2c6f02b6

21415452410550 has 192 divisors, whose sum is σ = 58034559193344. Its totient is φ = 5183027404800.

The previous prime is 21415452410537. The next prime is 21415452410551. The reversal of 21415452410550 is 5501425451412.

It is a junction number, because it is equal to n+sod(n) for n = 21415452410499 and 21415452410508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21415452410551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4155916774 + ... + 4155921926.

It is an arithmetic number, because the mean of its divisors is an integer number (302263329132).

Almost surely, 221415452410550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21415452410550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29017279596672).

21415452410550 is an abundant number, since it is smaller than the sum of its proper divisors (36619106782794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21415452410550 is a wasteful number, since it uses less digits than its factorization.

21415452410550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8863 (or 8858 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 39.

Adding to 21415452410550 its reverse (5501425451412), we get a palindrome (26916877861962).

The spelling of 21415452410550 in words is "twenty-one trillion, four hundred fifteen billion, four hundred fifty-two million, four hundred ten thousand, five hundred fifty".