645067144724 has 12 divisors (see below), whose sum is σ = 1148000851200. Its totient is φ = 317066901528.

The previous prime is 645067144723. The next prime is 645067144741. The reversal of 645067144724 is 427441760546.

It is a super-2 number, since 2×645067144724² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645067144721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366667444 + ... + 1366667915.

It is an arithmetic number, because the mean of its divisors is an integer number (95666737600).

Almost surely, 2^645067144724 is an apocalyptic number.

It is an amenable number.

645067144724 is a deficient number, since it is larger than the sum of its proper divisors (502933706476).

645067144724 is a wasteful number, since it uses less digits than its factorization.

645067144724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733335422 (or 2733335420 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 50.

The spelling of 645067144724 in words is "six hundred forty-five billion, sixty-seven million, one hundred forty-four thousand, seven hundred twenty-four".