10388625640 has 16 divisors (see below), whose sum is σ = 23374407780. Its totient is φ = 4155450240.

The previous prime is 10388625587. The next prime is 10388625661. The reversal of 10388625640 is 4652688301.

It can be written as a sum of positive squares in 2 ways, for example, as 10067714244 + 320911396 = 100338^2 + 17914^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129857781 + ... + 129857860.

Almost surely, 2^10388625640 is an apocalyptic number.

10388625640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10388625640 is an abundant number, since it is smaller than the sum of its proper divisors (12985782140).

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

10388625640 is a wasteful number, since it uses less digits than its factorization.

10388625640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259715652 (or 259715648 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 10388625640 in words is "ten billion, three hundred eighty-eight million, six hundred twenty-five thousand, six hundred forty".