10016565021 has 12 divisors (see below), whose sum is σ = 15097431648. Its totient is φ = 6387374664.

The previous prime is 10016565017. The next prime is 10016565043. The reversal of 10016565021 is 12056561001.

It is a happy number.

10016565021 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 6 + 5 + 650 + 2 + 1 = 666.

It is not a de Polignac number, because 10016565021 - 2² = 10016565017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10016569021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24194395 + ... + 24194808.

It is an arithmetic number, because the mean of its divisors is an integer number (1258119304).

Almost surely, 2^10016565021 is an apocalyptic number.

It is an amenable number.

10016565021 is a deficient number, since it is larger than the sum of its proper divisors (5080866627).

10016565021 is a wasteful number, since it uses less digits than its factorization.

10016565021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48389232 (or 48389229 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 10016565021 in words is "ten billion, sixteen million, five hundred sixty-five thousand, twenty-one".