12870531500 has 24 divisors (see below), whose sum is σ = 28109241888. Its totient is φ = 5148212400.

The previous prime is 12870531497. The next prime is 12870531563. The reversal of 12870531500 is 513507821.

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, 12870032 + ... + 12871031.

It is an arithmetic number, because the mean of its divisors is an integer number (1171218412).

Almost surely, 2^12870531500 is an apocalyptic number.

12870531500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12870531500 is an abundant number, since it is smaller than the sum of its proper divisors (15238710388).

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

12870531500 is a wasteful number, since it uses less digits than its factorization.

12870531500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25741082 (or 25741070 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 12870531500 in words is "twelve billion, eight hundred seventy million, five hundred thirty-one thousand, five hundred".