11931930079857 has 32 divisors (see below), whose sum is σ = 17726718240000. Its totient is φ = 7932248248320.

The previous prime is 11931930079841. The next prime is 11931930079913. The reversal of 11931930079857 is 75897003913911.

11931930079857 is a `hidden beast` number, since 1 + 1 + 9 + 319 + 300 + 7 + 9 + 8 + 5 + 7 = 666.

11931930079857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11931930079857 - 2⁴ = 11931930079841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11931930079794 and 11931930079803.

It is not an unprimeable number, because it can be changed into a prime (11931930079057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13289644 + ... + 14159042.

It is an arithmetic number, because the mean of its divisors is an integer number (553959945000).

Almost surely, 2^{11931930079857} is an apocalyptic number.

It is an amenable number.

11931930079857 is a deficient number, since it is larger than the sum of its proper divisors (5794788160143).

11931930079857 is an equidigital number, since it uses as much as digits as its factorization.

11931930079857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870838 (or 870832 counting only the distinct ones).

The product of its (nonzero) digits is 12859560, while the sum is 63.

The spelling of 11931930079857 in words is "eleven trillion, nine hundred thirty-one billion, nine hundred thirty million, seventy-nine thousand, eight hundred fifty-seven".