30610645621 has 12 divisors (see below), whose sum is σ = 32532218980. Its totient is φ = 28796705280.

The previous prime is 30610645613. The next prime is 30610645657. The reversal of 30610645621 is 12654601603.

It can be written as a sum of positive squares in 6 ways, for example, as 4135776100 + 26474869521 = 64310^2 + 162711^2 .

It is not a de Polignac number, because 30610645621 - 2³ = 30610645613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30610645601) 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, 632401 + ... + 679081.

Almost surely, 2^30610645621 is an apocalyptic number.

It is an amenable number.

30610645621 is a deficient number, since it is larger than the sum of its proper divisors (1921573359).

30610645621 is a wasteful number, since it uses less digits than its factorization.

30610645621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48984 (or 48967 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 30610645621 in words is "thirty billion, six hundred ten million, six hundred forty-five thousand, six hundred twenty-one".