125616615221612 has 12 divisors (see below), whose sum is σ = 220748863571040. Its totient is φ = 62545511344176.

The previous prime is 125616615221561. The next prime is 125616615221621. The reversal of 125616615221612 is 216122516616521.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65699065583 + ... + 65699067494.

It is an arithmetic number, because the mean of its divisors is an integer number (18395738630920).

Almost surely, 2^{125616615221612} is an apocalyptic number.

It is an amenable number.

125616615221612 is a deficient number, since it is larger than the sum of its proper divisors (95132248349428).

125616615221612 is a wasteful number, since it uses less digits than its factorization.

125616615221612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131398133320 (or 131398133318 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The spelling of 125616615221612 in words is "one hundred twenty-five trillion, six hundred sixteen billion, six hundred fifteen million, two hundred twenty-one thousand, six hundred twelve".