642110642158 has 8 divisors (see below), whose sum is σ = 963650702952. Its totient is φ = 320893741176.

The previous prime is 642110642141. The next prime is 642110642191. The reversal of 642110642158 is 851246011246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 642110642158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80784985 + ... + 80792932.

It is an arithmetic number, because the mean of its divisors is an integer number (120456337869).

Almost surely, 2^642110642158 is an apocalyptic number.

642110642158 is a deficient number, since it is larger than the sum of its proper divisors (321540060794).

642110642158 is a wasteful number, since it uses less digits than its factorization.

642110642158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161579906.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 642110642158 in words is "six hundred forty-two billion, one hundred ten million, six hundred forty-two thousand, one hundred fifty-eight".