6455991364 has 48 divisors (see below), whose sum is σ = 11886332976. Its totient is φ = 3065241600.

The previous prime is 6455991343. The next prime is 6455991391. The reversal of 6455991364 is 4631995546.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4112656900 + 2343334464 = 64130^2 + 48408^2 .

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 967062 + ... + 973714.

It is an arithmetic number, because the mean of its divisors is an integer number (247631937).

Almost surely, 2^6455991364 is an apocalyptic number.

It is an amenable number.

6455991364 is a deficient number, since it is larger than the sum of its proper divisors (5430341612).

6455991364 is a wasteful number, since it uses less digits than its factorization.

6455991364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856 (or 6854 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 52.

The square root of 6455991364 is about 80349.1839659869. The cubic root of 6455991364 is about 1862.0341721917.

The spelling of 6455991364 in words is "six billion, four hundred fifty-five million, nine hundred ninety-one thousand, three hundred sixty-four".