642260022177 has 8 divisors (see below), whose sum is σ = 856532031040. Its totient is φ = 428080680720.

The previous prime is 642260022163. The next prime is 642260022181. The reversal of 642260022177 is 771220062246.

It is a happy number.

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

It is not a de Polignac number, because 642260022177 - 2¹⁰ = 642260021153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642260022277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23150677 + ... + 23178402.

It is an arithmetic number, because the mean of its divisors is an integer number (107066503880).

Almost surely, 2^642260022177 is an apocalyptic number.

It is an amenable number.

642260022177 is a deficient number, since it is larger than the sum of its proper divisors (214272008863).

642260022177 is a wasteful number, since it uses less digits than its factorization.

642260022177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46333703.

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 642260022177 in words is "six hundred forty-two billion, two hundred sixty million, twenty-two thousand, one hundred seventy-seven".