645613063362 has 96 divisors (see below), whose sum is σ = 1468065087216. Its totient is φ = 204853708800.

The previous prime is 645613063253. The next prime is 645613063363. The reversal of 645613063362 is 263360316546.

645613063362 is a `hidden beast` number, since 6 + 4 + 5 + 6 + 1 + 3 + 0 + 633 + 6 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 103768381161 + 541844682201 = 322131^2 + 736101^2 .

It is not an unprimeable number, because it can be changed into a prime (645613063363) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7034038 + ... + 7125230.

Almost surely, 2^645613063362 is an apocalyptic number.

645613063362 is an abundant number, since it is smaller than the sum of its proper divisors (822452023854).

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

645613063362 is a wasteful number, since it uses less digits than its factorization.

645613063362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91476 (or 91473 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 45.

The spelling of 645613063362 in words is "six hundred forty-five billion, six hundred thirteen million, sixty-three thousand, three hundred sixty-two".