12570997540 has 24 divisors (see below), whose sum is σ = 27013029120. Its totient is φ = 4911459168.

The previous prime is 12570997511. The next prime is 12570997589. The reversal of 12570997540 is 4579907521.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

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, 7307860 + ... + 7309579.

It is an arithmetic number, because the mean of its divisors is an integer number (1125542880).

Almost surely, 2^12570997540 is an apocalyptic number.

12570997540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12570997540 is an abundant number, since it is smaller than the sum of its proper divisors (14442031580).

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

12570997540 is a wasteful number, since it uses less digits than its factorization.

12570997540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14617491 (or 14617489 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 49.

The spelling of 12570997540 in words is "twelve billion, five hundred seventy million, nine hundred ninety-seven thousand, five hundred forty".