642723653575 has 12 divisors (see below), whose sum is σ = 808202365488. Its totient is φ = 506936964800.

The previous prime is 642723653567. The next prime is 642723653599. The reversal of 642723653575 is 575356327246.

642723653575 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 642723653575 - 2³ = 642723653567 is a prime.

It is a super-2 number, since 2×642723653575² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181047142 + ... + 181050691.

It is an arithmetic number, because the mean of its divisors is an integer number (67350197124).

Almost surely, 2^642723653575 is an apocalyptic number.

642723653575 is a deficient number, since it is larger than the sum of its proper divisors (165478711913).

642723653575 is a wasteful number, since it uses less digits than its factorization.

642723653575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362097914 (or 362097909 counting only the distinct ones).

The product of its digits is 31752000, while the sum is 55.

The spelling of 642723653575 in words is "six hundred forty-two billion, seven hundred twenty-three million, six hundred fifty-three thousand, five hundred seventy-five".