65299185984 has 28 divisors (see below), whose sum is σ = 172770763424. Its totient is φ = 21766395264.

The previous prime is 65299185983. The next prime is 65299186019. The reversal of 65299185984 is 48958199256.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65299185983) 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, 170049772 + ... + 170050155.

It is an arithmetic number, because the mean of its divisors is an integer number (6170384408).

Almost surely, 2^65299185984 is an apocalyptic number.

65299185984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65299185984 is an abundant number, since it is smaller than the sum of its proper divisors (107471577440).

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

65299185984 is a wasteful number, since it uses less digits than its factorization.

65299185984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340099942 (or 340099932 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 66.

The spelling of 65299185984 in words is "sixty-five billion, two hundred ninety-nine million, one hundred eighty-five thousand, nine hundred eighty-four".