12640290870 has 32 divisors (see below), whose sum is σ = 30568285440. Its totient is φ = 3345012320.

The previous prime is 12640290847. The next prime is 12640290907. The reversal of 12640290870 is 7809204621.

12640290870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1604250 + ... + 1612109.

It is an arithmetic number, because the mean of its divisors is an integer number (955258920).

Almost surely, 2^12640290870 is an apocalyptic number.

12640290870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12640290870 is an abundant number, since it is smaller than the sum of its proper divisors (17927994570).

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

12640290870 is a wasteful number, since it uses less digits than its factorization.

12640290870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216500.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 12640290870 in words is "twelve billion, six hundred forty million, two hundred ninety thousand, eight hundred seventy".