391296350577966 has 16 divisors (see below), whose sum is σ = 786916417739088. Its totient is φ = 129711497428800.

The previous prime is 391296350577961. The next prime is 391296350578027. The reversal of 391296350577966 is 669775053692193.

It is a super-2 number, since 2×391296350577966² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 391296350577891 and 391296350577900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391296350577961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180154856455 + ... + 180154858626.

It is an arithmetic number, because the mean of its divisors is an integer number (49182276108693).

Almost surely, 2^{391296350577966} is an apocalyptic number.

391296350577966 is an abundant number, since it is smaller than the sum of its proper divisors (395620067161122).

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

391296350577966 is a wasteful number, since it uses less digits than its factorization.

391296350577966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360309715267.

The product of its (nonzero) digits is 3472081200, while the sum is 78.

The spelling of 391296350577966 in words is "three hundred ninety-one trillion, two hundred ninety-six billion, three hundred fifty million, five hundred seventy-seven thousand, nine hundred sixty-six".