647880909088746 has 16 divisors (see below), whose sum is σ = 1295791729406208. Its totient is φ = 215955317824800.

The previous prime is 647880909088739. The next prime is 647880909088759.

647880909088746 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246019610 + ... + 1246539461.

It is an arithmetic number, because the mean of its divisors is an integer number (80986983087888).

Almost surely, 2^{647880909088746} is an apocalyptic number.

647880909088746 is an abundant number, since it is smaller than the sum of its proper divisors (647910820317462).

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

647880909088746 is a wasteful number, since it uses less digits than its factorization.

647880909088746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492602397.

The product of its (nonzero) digits is 9364045824, while the sum is 84.

The spelling of 647880909088746 in words is "six hundred forty-seven trillion, eight hundred eighty billion, nine hundred nine million, eighty-eight thousand, seven hundred forty-six".