52621240065 has 32 divisors (see below), whose sum is σ = 85920393600. Its totient is φ = 27494355456.

The previous prime is 52621240057. The next prime is 52621240103. The reversal of 52621240065 is 56004212625.

It is not a de Polignac number, because 52621240065 - 2³ = 52621240057 is a prime.

It is a super-2 number, since 2×52621240065² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1894 + ... + 324416.

It is an arithmetic number, because the mean of its divisors is an integer number (2685012300).

Almost surely, 2^52621240065 is an apocalyptic number.

It is an amenable number.

52621240065 is a deficient number, since it is larger than the sum of its proper divisors (33299153535).

52621240065 is a wasteful number, since it uses less digits than its factorization.

52621240065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322753.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 52621240065 in words is "fifty-two billion, six hundred twenty-one million, two hundred forty thousand, sixty-five".