645415536316 has 24 divisors (see below), whose sum is σ = 1130683130640. Its totient is φ = 322363385472.

The previous prime is 645415536251. The next prime is 645415536373. The reversal of 645415536316 is 613635514546.

It is a super-2 number, since 2×645415536316² (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 645415536316.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16655035 + ... + 16693741.

It is an arithmetic number, because the mean of its divisors is an integer number (47111797110).

Almost surely, 2^645415536316 is an apocalyptic number.

It is an amenable number.

645415536316 is a deficient number, since it is larger than the sum of its proper divisors (485267594324).

645415536316 is a wasteful number, since it uses less digits than its factorization.

645415536316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43053 (or 43051 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 49.

The spelling of 645415536316 in words is "six hundred forty-five billion, four hundred fifteen million, five hundred thirty-six thousand, three hundred sixteen".