105156604080621 has 16 divisors (see below), whose sum is σ = 155827994550720. Its totient is φ = 70086207893040.

The previous prime is 105156604080601. The next prime is 105156604080631. The reversal of 105156604080621 is 126080406651501.

105156604080621 is a `hidden beast` number, since 1 + 0 + 5 + 1 + 566 + 0 + 4 + 0 + 80 + 6 + 2 + 1 = 666.

It is not a de Polignac number, because 105156604080621 - 2⁵ = 105156604080589 is a prime.

It is a super-2 number, since 2×105156604080621² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105156604080601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505305915 + ... + 505513976.

It is an arithmetic number, because the mean of its divisors is an integer number (9739249659420).

Almost surely, 2^{105156604080621} is an apocalyptic number.

It is an amenable number.

105156604080621 is a deficient number, since it is larger than the sum of its proper divisors (50671390470099).

105156604080621 is a wasteful number, since it uses less digits than its factorization.

105156604080621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010823753 (or 1010823747 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 105156604080621 in words is "one hundred five trillion, one hundred fifty-six billion, six hundred four million, eighty thousand, six hundred twenty-one".