645418675710 has 24 divisors (see below), whose sum is σ = 1678088557080. Its totient is φ = 172111646832.

The previous prime is 645418675669. The next prime is 645418675763. The reversal of 645418675710 is 17576814546.

645418675710 is a `hidden beast` number, since 6 + 4 + 5 + 4 + 1 + 8 + 67 + 571 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3585659220 + ... + 3585659399.

It is an arithmetic number, because the mean of its divisors is an integer number (69920356545).

Almost surely, 2^645418675710 is an apocalyptic number.

645418675710 is an abundant number, since it is smaller than the sum of its proper divisors (1032669881370).

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

645418675710 is a wasteful number, since it uses less digits than its factorization.

645418675710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7171318632 (or 7171318629 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 645418675710 in words is "six hundred forty-five billion, four hundred eighteen million, six hundred seventy-five thousand, seven hundred ten".