642376274722 has 64 divisors (see below), whose sum is σ = 1216036168704. Its totient is φ = 247748336640.

The previous prime is 642376274717. The next prime is 642376274797. The reversal of 642376274722 is 227472673246.

It is a self number, because there is not a number n which added to its sum of digits gives 642376274722.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998503 + ... + 1510549.

It is an arithmetic number, because the mean of its divisors is an integer number (19000565136).

Almost surely, 2^642376274722 is an apocalyptic number.

642376274722 is a deficient number, since it is larger than the sum of its proper divisors (573659893982).

642376274722 is a wasteful number, since it uses less digits than its factorization.

642376274722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512243.

The product of its digits is 9483264, while the sum is 52.

The spelling of 642376274722 in words is "six hundred forty-two billion, three hundred seventy-six million, two hundred seventy-four thousand, seven hundred twenty-two".