916464646491 has 32 divisors (see below), whose sum is σ = 1239170393088. Its totient is φ = 602420582400.

The previous prime is 916464646469. The next prime is 916464646501. The reversal of 916464646491 is 194646464619.

It is not a de Polignac number, because 916464646491 - 2²¹ = 916462549339 is a prime.

It is a super-2 number, since 2×916464646491² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (916464646441) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268992910 + ... + 268996316.

It is an arithmetic number, because the mean of its divisors is an integer number (38724074784).

Almost surely, 2^916464646491 is an apocalyptic number.

916464646491 is a deficient number, since it is larger than the sum of its proper divisors (322705746597).

916464646491 is a wasteful number, since it uses less digits than its factorization.

916464646491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931.

The product of its digits is 26873856, while the sum is 60.

The spelling of 916464646491 in words is "nine hundred sixteen billion, four hundred sixty-four million, six hundred forty-six thousand, four hundred ninety-one".