65228368931 has 32 divisors (see below), whose sum is σ = 75537446400. Its totient is φ = 55704084480.

The previous prime is 65228368921. The next prime is 65228368937. The reversal of 65228368931 is 13986382256.

It is not a de Polignac number, because 65228368931 - 2¹⁰ = 65228367907 is a prime.

It is a super-2 number, since 2×65228368931² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65228368937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12297626 + ... + 12302928.

It is an arithmetic number, because the mean of its divisors is an integer number (2360545200).

Almost surely, 2^65228368931 is an apocalyptic number.

65228368931 is a deficient number, since it is larger than the sum of its proper divisors (10309077469).

65228368931 is a wasteful number, since it uses less digits than its factorization.

65228368931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819.

The product of its digits is 3732480, while the sum is 53.

The spelling of 65228368931 in words is "sixty-five billion, two hundred twenty-eight million, three hundred sixty-eight thousand, nine hundred thirty-one".