10156504161621 has 8 divisors (see below), whose sum is σ = 13542091358400. Its totient is φ = 6770959869632.

The previous prime is 10156504161599. The next prime is 10156504161623. The reversal of 10156504161621 is 12616140565101.

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

It is a cyclic number.

It is not a de Polignac number, because 10156504161621 - 2¹⁰ = 10156504160597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10156504161621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10156504161623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10169721 + ... + 11123678.

It is an arithmetic number, because the mean of its divisors is an integer number (1692761419800).

Almost surely, 2^{10156504161621} is an apocalyptic number.

It is an amenable number.

10156504161621 is a deficient number, since it is larger than the sum of its proper divisors (3385587196779).

10156504161621 is a wasteful number, since it uses less digits than its factorization.

10156504161621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21452395.

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 10156504161621 in words is "ten trillion, one hundred fifty-six billion, five hundred four million, one hundred sixty-one thousand, six hundred twenty-one".