391345061118 has 16 divisors (see below), whose sum is σ = 853843769856. Its totient is φ = 118589412440.

The previous prime is 391345061089. The next prime is 391345061143. The reversal of 391345061118 is 811160543193.

It is a super-2 number, since 2×391345061118² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 391345061118.

It is a congruent number.

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, 2964735246 + ... + 2964735377.

It is an arithmetic number, because the mean of its divisors is an integer number (53365235616).

Almost surely, 2^391345061118 is an apocalyptic number.

391345061118 is an abundant number, since it is smaller than the sum of its proper divisors (462498708738).

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

391345061118 is a wasteful number, since it uses less digits than its factorization.

391345061118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929470639.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 391345061118 in words is "three hundred ninety-one billion, three hundred forty-five million, sixty-one thousand, one hundred eighteen".