656030140540 has 24 divisors (see below), whose sum is σ = 1403656944480. Its totient is φ = 257460884928.

The previous prime is 656030140537. The next prime is 656030140621. The reversal of 656030140540 is 45041030656.

656030140540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 656030140496 and 656030140505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309447120 + ... + 309449239.

It is an arithmetic number, because the mean of its divisors is an integer number (58485706020).

Almost surely, 2^656030140540 is an apocalyptic number.

It is an amenable number.

656030140540 is an abundant number, since it is smaller than the sum of its proper divisors (747626803940).

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

656030140540 is a wasteful number, since it uses less digits than its factorization.

656030140540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618896421 (or 618896419 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 656030140540 in words is "six hundred fifty-six billion, thirty million, one hundred forty thousand, five hundred forty".