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21330502442 = 237645144683
BaseRepresentation
bin10011110111011001…
…011010001100101010
32001001120002210110222
4103313121122030222
5322141102034232
613444334410042
71353406164524
oct236731321452
961046083428
1021330502442
119056570217
124173660922
13201c2324a2
141064ca6a14
1584c983d12
hex4f765a32a

21330502442 has 16 divisors (see below), whose sum is σ = 32866333152. Its totient is φ = 10375160400.

The previous prime is 21330502441. The next prime is 21330502477. The reversal of 21330502442 is 24420503312.

It is not an unprimeable number, because it can be changed into a prime (21330502441) 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, 455033 + ... + 499715.

It is an arithmetic number, because the mean of its divisors is an integer number (2054145822).

Almost surely, 221330502442 is an apocalyptic number.

21330502442 is a deficient number, since it is larger than the sum of its proper divisors (11535830710).

21330502442 is a wasteful number, since it uses less digits than its factorization.

21330502442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51173.

The product of its (nonzero) digits is 5760, while the sum is 26.

The spelling of 21330502442 in words is "twenty-one billion, three hundred thirty million, five hundred two thousand, four hundred forty-two".

Divisors: 1 2 37 74 6451 12902 44683 89366 238687 477374 1653271 3306542 288250033 576500066 10665251221 21330502442