642767572473 has 24 divisors (see below), whose sum is σ = 928172076480. Its totient is φ = 395484223680.

The previous prime is 642767572453. The next prime is 642767572493. The reversal of 642767572473 is 374275767246.

It is an interprime number because it is at equal distance from previous prime (642767572453) and next prime (642767572493).

It is not a de Polignac number, because 642767572473 - 2¹⁷ = 642767441401 is a prime.

It is a super-3 number, since 3×642767572473³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (642767572423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3077268 + ... + 3279498.

It is an arithmetic number, because the mean of its divisors is an integer number (38673836520).

Almost surely, 2^642767572473 is an apocalyptic number.

It is an amenable number.

642767572473 is a deficient number, since it is larger than the sum of its proper divisors (285404504007).

642767572473 is a wasteful number, since it uses less digits than its factorization.

642767572473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208529 (or 208516 counting only the distinct ones).

The product of its digits is 82978560, while the sum is 60.

The spelling of 642767572473 in words is "six hundred forty-two billion, seven hundred sixty-seven million, five hundred seventy-two thousand, four hundred seventy-three".