30675505657 has 4 divisors (see below), whose sum is σ = 30688326900. Its totient is φ = 30662684416.

The previous prime is 30675505607. The next prime is 30675505661. The reversal of 30675505657 is 75650557603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12683039161 + 17992466496 = 112619^2 + 134136^2 .

It is a cyclic number.

It is not a de Polignac number, because 30675505657 - 2²³ = 30667117049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30675505657.

It is not an unprimeable number, because it can be changed into a prime (30675505607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6407032 + ... + 6411817.

It is an arithmetic number, because the mean of its divisors is an integer number (7672081725).

Almost surely, 2^30675505657 is an apocalyptic number.

It is an amenable number.

30675505657 is a deficient number, since it is larger than the sum of its proper divisors (12821243).

30675505657 is a wasteful number, since it uses less digits than its factorization.

30675505657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12821242.

The product of its (nonzero) digits is 3307500, while the sum is 49.

The spelling of 30675505657 in words is "thirty billion, six hundred seventy-five million, five hundred five thousand, six hundred fifty-seven".