642046676475 has 24 divisors (see below), whose sum is σ = 1064112619120. Its totient is φ = 341587653120.

The previous prime is 642046676471. The next prime is 642046676483. The reversal of 642046676475 is 574676640246.

It is a happy number.

It is not a de Polignac number, because 642046676475 - 2² = 642046676471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642046676471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10434634 + ... + 10495983.

Almost surely, 2^642046676475 is an apocalyptic number.

642046676475 is a deficient number, since it is larger than the sum of its proper divisors (422065942645).

642046676475 is a wasteful number, since it uses less digits than its factorization.

642046676475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20931039 (or 20931034 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 57.

The spelling of 642046676475 in words is "six hundred forty-two billion, forty-six million, six hundred seventy-six thousand, four hundred seventy-five".