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21342155435 = 519312210477
BaseRepresentation
bin10011111000000101…
…110111001010101011
32001002101000211101022
4103320011313022223
5322202042433220
613445432243055
71353610220336
oct237005671253
961071024338
1021342155435
1190620aa297
12417754048b
132021782553
14106665b61d
1584d9d6925
hex4f81772ab

21342155435 has 8 divisors (see below), whose sum is σ = 25623860976. Its totient is φ = 17064874720.

The previous prime is 21342155431. The next prime is 21342155489. The reversal of 21342155435 is 53455124312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21342155435 - 22 = 21342155431 is a prime.

It is a super-2 number, since 2×213421554352 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21342155395 and 21342155404.

It is not an unprimeable number, because it can be changed into a prime (21342155431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095584 + ... + 1114893.

It is an arithmetic number, because the mean of its divisors is an integer number (3202982622).

Almost surely, 221342155435 is an apocalyptic number.

21342155435 is a deficient number, since it is larger than the sum of its proper divisors (4281705541).

21342155435 is a wasteful number, since it uses less digits than its factorization.

21342155435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212413.

The product of its digits is 72000, while the sum is 35.

Adding to 21342155435 its reverse (53455124312), we get a palindrome (74797279747).

The spelling of 21342155435 in words is "twenty-one billion, three hundred forty-two million, one hundred fifty-five thousand, four hundred thirty-five".

Divisors: 1 5 1931 9655 2210477 11052385 4268431087 21342155435