642723373275 has 48 divisors (see below), whose sum is σ = 1066250469888. Its totient is φ = 341621584000.

The previous prime is 642723373241. The next prime is 642723373307. The reversal of 642723373275 is 572373327246.

It is a happy number.

It is not a de Polignac number, because 642723373275 - 2¹⁵ = 642723340507 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 31377337 + ... + 31397813.

It is an arithmetic number, because the mean of its divisors is an integer number (22213551456).

Almost surely, 2^642723373275 is an apocalyptic number.

642723373275 is a deficient number, since it is larger than the sum of its proper divisors (423527096613).

642723373275 is a wasteful number, since it uses less digits than its factorization.

642723373275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21892 (or 21887 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 51.

The spelling of 642723373275 in words is "six hundred forty-two billion, seven hundred twenty-three million, three hundred seventy-three thousand, two hundred seventy-five".