12557015670 has 64 divisors (see below), whose sum is σ = 30265415424. Its totient is φ = 3334289280.

The previous prime is 12557015663. The next prime is 12557015671. The reversal of 12557015670 is 7651075521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557015671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10796509 + ... + 10797671.

It is an arithmetic number, because the mean of its divisors is an integer number (472897116).

Almost surely, 2^12557015670 is an apocalyptic number.

12557015670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12557015670 is an abundant number, since it is smaller than the sum of its proper divisors (17708399754).

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

12557015670 is a wasteful number, since it uses less digits than its factorization.

12557015670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 12557015670 in words is "twelve billion, five hundred fifty-seven million, fifteen thousand, six hundred seventy".