65116817320 has 64 divisors (see below), whose sum is σ = 147075984000. Its totient is φ = 25946811648.

The previous prime is 65116817303. The next prime is 65116817329. The reversal of 65116817320 is 2371861156.

It is a happy number.

65116817320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (65116817329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12868951 + ... + 12874009.

It is an arithmetic number, because the mean of its divisors is an integer number (2298062250).

Almost surely, 2^65116817320 is an apocalyptic number.

It is an amenable number.

65116817320 is an abundant number, since it is smaller than the sum of its proper divisors (81959166680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65116817320 is a wasteful number, since it uses less digits than its factorization.

65116817320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6242 (or 6238 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 65116817320 in words is "sixty-five billion, one hundred sixteen million, eight hundred seventeen thousand, three hundred twenty".