30655857140 has 12 divisors (see below), whose sum is σ = 64377300036. Its totient is φ = 12262342848.

The previous prime is 30655857103. The next prime is 30655857149. The reversal of 30655857140 is 4175855603.

It can be written as a sum of positive squares in 2 ways, for example, as 21314248036 + 9341609104 = 145994^2 + 96652^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30655857091 and 30655857100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30655857149) 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, 766396409 + ... + 766396448.

It is an arithmetic number, because the mean of its divisors is an integer number (5364775003).

Almost surely, 2^30655857140 is an apocalyptic number.

It is an amenable number.

30655857140 is an abundant number, since it is smaller than the sum of its proper divisors (33721442896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30655857140 is a wasteful number, since it uses less digits than its factorization.

30655857140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532792866 (or 1532792864 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 30655857140 in words is "thirty billion, six hundred fifty-five million, eight hundred fifty-seven thousand, one hundred forty".