991160515351 has 8 divisors (see below), whose sum is σ = 992109907440. Its totient is φ = 990211244352.

The previous prime is 991160515321. The next prime is 991160515363. The reversal of 991160515351 is 153515061199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 991160515351 - 2¹³ = 991160507159 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 (991160515321) 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, 32925915 + ... + 32956003.

It is an arithmetic number, because the mean of its divisors is an integer number (124013738430).

Almost surely, 2^991160515351 is an apocalyptic number.

991160515351 is a deficient number, since it is larger than the sum of its proper divisors (949392089).

991160515351 is a wasteful number, since it uses less digits than its factorization.

991160515351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60545.

The product of its (nonzero) digits is 182250, while the sum is 46.

The spelling of 991160515351 in words is "nine hundred ninety-one billion, one hundred sixty million, five hundred fifteen thousand, three hundred fifty-one".