391809675054 has 16 divisors (see below), whose sum is σ = 895564971648. Its totient is φ = 111945621432.

The previous prime is 391809675007. The next prime is 391809675083. The reversal of 391809675054 is 450576908193.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 391809674985 and 391809675003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4664400852 + ... + 4664400935.

It is an arithmetic number, because the mean of its divisors is an integer number (55972810728).

Almost surely, 2^391809675054 is an apocalyptic number.

391809675054 is an abundant number, since it is smaller than the sum of its proper divisors (503755296594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391809675054 is a wasteful number, since it uses less digits than its factorization.

391809675054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9328801799.

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 391809675054 in words is "three hundred ninety-one billion, eight hundred nine million, six hundred seventy-five thousand, fifty-four".