391866100016 has 40 divisors (see below), whose sum is σ = 785648822400. Its totient is φ = 189148930560.

The previous prime is 391866100013. The next prime is 391866100069. The reversal of 391866100016 is 610001668193.

It is not an unprimeable number, because it can be changed into a prime (391866100013) by changing a digit.

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, 762971 + ... + 1168698.

It is an arithmetic number, because the mean of its divisors is an integer number (19641220560).

Almost surely, 2^391866100016 is an apocalyptic number.

It is an amenable number.

391866100016 is an abundant number, since it is smaller than the sum of its proper divisors (393782722384).

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

391866100016 is a wasteful number, since it uses less digits than its factorization.

391866100016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932117 (or 1932111 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 391866100016 in words is "three hundred ninety-one billion, eight hundred sixty-six million, one hundred thousand, sixteen".