65896631751 has 4 divisors (see below), whose sum is σ = 87862175672. Its totient is φ = 43931087832.

The previous prime is 65896631719. The next prime is 65896631767. The reversal of 65896631751 is 15713669856.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 65896631751 - 2⁵ = 65896631719 is a prime.

It is a super-2 number, since 2×65896631751² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65896631691 and 65896631700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65896631651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10982771956 + ... + 10982771961.

It is an arithmetic number, because the mean of its divisors is an integer number (21965543918).

Almost surely, 2^65896631751 is an apocalyptic number.

65896631751 is a deficient number, since it is larger than the sum of its proper divisors (21965543921).

65896631751 is a wasteful number, since it uses less digits than its factorization.

65896631751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21965543920.

The product of its digits is 8164800, while the sum is 57.

The spelling of 65896631751 in words is "sixty-five billion, eight hundred ninety-six million, six hundred thirty-one thousand, seven hundred fifty-one".