125691391378088 has 32 divisors (see below), whose sum is σ = 235925922542400. Its totient is φ = 62777816105088.

The previous prime is 125691391378079. The next prime is 125691391378243. The reversal of 125691391378088 is 880873193196521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265406453 + ... + 265879611.

It is an arithmetic number, because the mean of its divisors is an integer number (7372685079450).

Almost surely, 2^{125691391378088} is an apocalyptic number.

It is an amenable number.

125691391378088 is a deficient number, since it is larger than the sum of its proper divisors (110234531164312).

125691391378088 is a wasteful number, since it uses less digits than its factorization.

125691391378088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508961 (or 508957 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 71.

The spelling of 125691391378088 in words is "one hundred twenty-five trillion, six hundred ninety-one billion, three hundred ninety-one million, three hundred seventy-eight thousand, eighty-eight".