642460606065 has 48 divisors (see below), whose sum is σ = 1128249457920. Its totient is φ = 338141905920.

The previous prime is 642460606043. The next prime is 642460606079. The reversal of 642460606065 is 560606064246.

It is not a de Polignac number, because 642460606065 - 2¹⁰ = 642460605041 is a prime.

It is a super-2 number, since 2×642460606065² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 642460606065.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7354534 + ... + 7441376.

It is an arithmetic number, because the mean of its divisors is an integer number (23505197040).

Almost surely, 2^642460606065 is an apocalyptic number.

It is an amenable number.

642460606065 is a deficient number, since it is larger than the sum of its proper divisors (485788851855).

642460606065 is a wasteful number, since it uses less digits than its factorization.

642460606065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89014 (or 89011 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 642460606065 in words is "six hundred forty-two billion, four hundred sixty million, six hundred six thousand, sixty-five".