65730722736 has 80 divisors (see below), whose sum is σ = 194095116800. Its totient is φ = 18777014784.

The previous prime is 65730722713. The next prime is 65730722747. The reversal of 65730722736 is 63722703756.

It is a super-2 number, since 2×65730722736² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2553900 + ... + 2579508.

It is an arithmetic number, because the mean of its divisors is an integer number (2426188960).

Almost surely, 2^65730722736 is an apocalyptic number.

It is an amenable number.

65730722736 is an abundant number, since it is smaller than the sum of its proper divisors (128364394064).

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

65730722736 is a wasteful number, since it uses less digits than its factorization.

65730722736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33266 (or 33260 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 48.

The spelling of 65730722736 in words is "sixty-five billion, seven hundred thirty million, seven hundred twenty-two thousand, seven hundred thirty-six".