391113857096351 has 16 divisors (see below), whose sum is σ = 415845323518464. Its totient is φ = 367027155210144.

The previous prime is 391113857096329. The next prime is 391113857096359. The reversal of 391113857096351 is 153690758311193.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-391113857096351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391113857096359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9305510 + ... + 29475756.

It is an arithmetic number, because the mean of its divisors is an integer number (25990332719904).

Almost surely, 2^{391113857096351} is an apocalyptic number.

391113857096351 is a deficient number, since it is larger than the sum of its proper divisors (24731466422113).

391113857096351 is a wasteful number, since it uses less digits than its factorization.

391113857096351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20186230.

The product of its (nonzero) digits is 18370800, while the sum is 62.

The spelling of 391113857096351 in words is "three hundred ninety-one trillion, one hundred thirteen billion, eight hundred fifty-seven million, ninety-six thousand, three hundred fifty-one".