10621404755613 has 32 divisors (see below), whose sum is σ = 16768083043200. Its totient is φ = 6708255608880.

The previous prime is 10621404755587. The next prime is 10621404755617. The reversal of 10621404755613 is 31655740412601.

It is a happy number.

10621404755613 is a `hidden beast` number, since 1 + 0 + 6 + 2 + 1 + 40 + 47 + 5 + 561 + 3 = 666.

It is not a de Polignac number, because 10621404755613 - 2²⁹ = 10620867884701 is a prime.

It is a super-2 number, since 2×10621404755613² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10621404755617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127763958 + ... + 127847063.

It is an arithmetic number, because the mean of its divisors is an integer number (524002595100).

Almost surely, 2^{10621404755613} is an apocalyptic number.

It is an amenable number.

10621404755613 is a deficient number, since it is larger than the sum of its proper divisors (6146678287587).

10621404755613 is an frugal number, since it uses more digits than its factorization.

10621404755613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255611061 (or 255611043 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 10621404755613 in words is "ten trillion, six hundred twenty-one billion, four hundred four million, seven hundred fifty-five thousand, six hundred thirteen".