125293978138 has 32 divisors (see below), whose sum is σ = 230708592000. Its totient is φ = 50871233952.

The previous prime is 125293978129. The next prime is 125293978151. The reversal of 125293978138 is 831879392521.

It is a happy number.

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, 4793395 + ... + 4819462.

It is an arithmetic number, because the mean of its divisors is an integer number (7209643500).

Almost surely, 2^125293978138 is an apocalyptic number.

125293978138 is a deficient number, since it is larger than the sum of its proper divisors (105414613862).

125293978138 is an equidigital number, since it uses as much as digits as its factorization.

125293978138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9612899 (or 9612885 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 58.

The spelling of 125293978138 in words is "one hundred twenty-five billion, two hundred ninety-three million, nine hundred seventy-eight thousand, one hundred thirty-eight".