642023404613424 has 80 divisors (see below), whose sum is σ = 1868089409253600. Its totient is φ = 211076187807744.

The previous prime is 642023404613341. The next prime is 642023404613443. The reversal of 642023404613424 is 424316404320246.

642023404613424 is a `hidden beast` number, since 6 + 4 + 2 + 0 + 2 + 3 + 4 + 0 + 4 + 613 + 4 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 642023404613424.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10179182769 + ... + 10179245840.

It is an arithmetic number, because the mean of its divisors is an integer number (23351117615670).

Almost surely, 2^{642023404613424} is an apocalyptic number.

It is an amenable number.

642023404613424 is an abundant number, since it is smaller than the sum of its proper divisors (1226066004640176).

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

642023404613424 is a wasteful number, since it uses less digits than its factorization.

642023404613424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20358428699 (or 20358428687 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 45.

The spelling of 642023404613424 in words is "six hundred forty-two trillion, twenty-three billion, four hundred four million, six hundred thirteen thousand, four hundred twenty-four".