123643615320125 has 32 divisors (see below), whose sum is σ = 155514709109760. Its totient is φ = 98141759956800.

The previous prime is 123643615320097. The next prime is 123643615320131. The reversal of 123643615320125 is 521023516346321.

It is not a de Polignac number, because 123643615320125 - 2⁸ = 123643615319869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25519892 + ... + 29975858.

It is an arithmetic number, because the mean of its divisors is an integer number (4859834659680).

Almost surely, 2^{123643615320125} is an apocalyptic number.

It is an amenable number.

123643615320125 is a deficient number, since it is larger than the sum of its proper divisors (31871093789635).

123643615320125 is a wasteful number, since it uses less digits than its factorization.

123643615320125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457718 (or 4457708 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 123643615320125 in words is "one hundred twenty-three trillion, six hundred forty-three billion, six hundred fifteen million, three hundred twenty thousand, one hundred twenty-five".