65960780875 has 64 divisors (see below), whose sum is σ = 93046247424. Its totient is φ = 46250400000.

The previous prime is 65960780863. The next prime is 65960780891. The reversal of 65960780875 is 57808706956.

It is not a de Polignac number, because 65960780875 - 2¹⁹ = 65960256587 is a prime.

It is a super-2 number, since 2×65960780875² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11974872 + ... + 11980378.

It is an arithmetic number, because the mean of its divisors is an integer number (1453847616).

Almost surely, 2^65960780875 is an apocalyptic number.

65960780875 is a deficient number, since it is larger than the sum of its proper divisors (27085466549).

65960780875 is a wasteful number, since it uses less digits than its factorization.

65960780875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5845 (or 5835 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 65960780875 in words is "sixty-five billion, nine hundred sixty million, seven hundred eighty thousand, eight hundred seventy-five".