645820488714 has 32 divisors (see below), whose sum is σ = 1331451012096. Its totient is φ = 208724103920.

The previous prime is 645820488707. The next prime is 645820488737. The reversal of 645820488714 is 417884028546.

645820488714 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10671432 + ... + 10731779.

It is an arithmetic number, because the mean of its divisors is an integer number (41607844128).

Almost surely, 2^645820488714 is an apocalyptic number.

645820488714 is an abundant number, since it is smaller than the sum of its proper divisors (685630523382).

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

645820488714 is a wasteful number, since it uses less digits than its factorization.

645820488714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21403370.

The product of its (nonzero) digits is 13762560, while the sum is 57.

The spelling of 645820488714 in words is "six hundred forty-five billion, eight hundred twenty million, four hundred eighty-eight thousand, seven hundred fourteen".