7746849165391 has 12 divisors (see below), whose sum is σ = 9019009407312. Its totient is φ = 6634726975968.

The previous prime is 7746849165373. The next prime is 7746849165397. The reversal of 7746849165391 is 1935619486477.

It is a happy number.

It is not a de Polignac number, because 7746849165391 - 2²³ = 7746840776783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7746849165391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7746849165397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64575790 + ... + 64695643.

It is an arithmetic number, because the mean of its divisors is an integer number (751584117276).

Almost surely, 2^{7746849165391} is an apocalyptic number.

7746849165391 is a deficient number, since it is larger than the sum of its proper divisors (1272160241921).

7746849165391 is a wasteful number, since it uses less digits than its factorization.

7746849165391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129272670 (or 129272663 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 70.

The spelling of 7746849165391 in words is "seven trillion, seven hundred forty-six billion, eight hundred forty-nine million, one hundred sixty-five thousand, three hundred ninety-one".