391656412848 has 40 divisors (see below), whose sum is σ = 1024586406400. Its totient is φ = 128899577664.

The previous prime is 391656412817. The next prime is 391656412859. The reversal of 391656412848 is 848214656193.

It is a super-2 number, since 2×391656412848² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51638668 + ... + 51646251.

It is an arithmetic number, because the mean of its divisors is an integer number (25614660160).

Almost surely, 2^391656412848 is an apocalyptic number.

It is an amenable number.

391656412848 is an abundant number, since it is smaller than the sum of its proper divisors (632929993552).

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

391656412848 is a wasteful number, since it uses less digits than its factorization.

391656412848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103285009 (or 103285003 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 57.

The spelling of 391656412848 in words is "three hundred ninety-one billion, six hundred fifty-six million, four hundred twelve thousand, eight hundred forty-eight".