642345511404006 has 12 divisors (see below), whose sum is σ = 1391748608042052. Its totient is φ = 214115170467996.

The previous prime is 642345511403989. The next prime is 642345511404061. The reversal of 642345511404006 is 600404115543246.

642345511404006 is a `hidden beast` number, since 6 + 4 + 234 + 5 + 5 + 1 + 1 + 4 + 0 + 400 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17842930872316 + ... + 17842930872351.

It is an arithmetic number, because the mean of its divisors is an integer number (115979050670171).

Almost surely, 2^{642345511404006} is an apocalyptic number.

642345511404006 is an abundant number, since it is smaller than the sum of its proper divisors (749403096638046).

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

642345511404006 is a wasteful number, since it uses less digits than its factorization.

642345511404006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35685861744675 (or 35685861744672 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 642345511404006 in words is "six hundred forty-two trillion, three hundred forty-five billion, five hundred eleven million, four hundred four thousand, six".