131216707570 has 32 divisors (see below), whose sum is σ = 254666317248. Its totient is φ = 48390621888.

The previous prime is 131216707561. The next prime is 131216707591. The reversal of 131216707570 is 75707612131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502744 + ... + 717763.

It is an arithmetic number, because the mean of its divisors is an integer number (7958322414).

Almost surely, 2^131216707570 is an apocalyptic number.

131216707570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131216707570 is a deficient number, since it is larger than the sum of its proper divisors (123449609678).

131216707570 is a wasteful number, since it uses less digits than its factorization.

131216707570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221354.

The product of its (nonzero) digits is 61740, while the sum is 40.

The spelling of 131216707570 in words is "one hundred thirty-one billion, two hundred sixteen million, seven hundred seven thousand, five hundred seventy".