6455636874 has 16 divisors (see below), whose sum is σ = 14345859840. Its totient is φ = 2151878940.

The previous prime is 6455636861. The next prime is 6455636939. The reversal of 6455636874 is 4786365546.

6455636874 is a `hidden beast` number, since 6 + 4 + 5 + 563 + 6 + 8 + 74 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 119548831 = 6455636874 / (6 + 4 + 5 + 5 + 6 + 3 + 6 + 8 + 7 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 6455636874.

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 7 ways as a sum of consecutive naturals, for example, 59774362 + ... + 59774469.

It is an arithmetic number, because the mean of its divisors is an integer number (896616240).

Almost surely, 2^6455636874 is an apocalyptic number.

6455636874 is an abundant number, since it is smaller than the sum of its proper divisors (7890222966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6455636874 is a wasteful number, since it uses less digits than its factorization.

6455636874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119548842 (or 119548836 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The square root of 6455636874 is about 80346.9780016648. The cubic root of 6455636874 is about 1862.0000909516. Note that the first 4 decimals are identical.

The spelling of 6455636874 in words is "six billion, four hundred fifty-five million, six hundred thirty-six thousand, eight hundred seventy-four".