645842622362 has 64 divisors (see below), whose sum is σ = 1153670563584. Its totient is φ = 265427151360.

The previous prime is 645842622331. The next prime is 645842622389. The reversal of 645842622362 is 263226248546.

It is a super-2 number, since 2×645842622362² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 645842622362.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9351068 + ... + 9419880.

It is an arithmetic number, because the mean of its divisors is an integer number (18026102556).

Almost surely, 2^645842622362 is an apocalyptic number.

645842622362 is a deficient number, since it is larger than the sum of its proper divisors (507827941222).

645842622362 is a wasteful number, since it uses less digits than its factorization.

645842622362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69143.

The product of its digits is 6635520, while the sum is 50.

The spelling of 645842622362 in words is "six hundred forty-five billion, eight hundred forty-two million, six hundred twenty-two thousand, three hundred sixty-two".