642123575883 has 12 divisors (see below), whose sum is σ = 933202090600. Its totient is φ = 425456110656.

The previous prime is 642123575879. The next prime is 642123575903. The reversal of 642123575883 is 388575321246.

642123575883 is a `hidden beast` number, since 6 + 4 + 2 + 1 + 2 + 3 + 57 + 588 + 3 = 666.

It is not a de Polignac number, because 642123575883 - 2² = 642123575879 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642123575803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218854558 + ... + 218857491.

Almost surely, 2^642123575883 is an apocalyptic number.

642123575883 is a deficient number, since it is larger than the sum of its proper divisors (291078514717).

642123575883 is a wasteful number, since it uses less digits than its factorization.

642123575883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437712218 (or 437712215 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 642123575883 in words is "six hundred forty-two billion, one hundred twenty-three million, five hundred seventy-five thousand, eight hundred eighty-three".