65720204260 has 48 divisors (see below), whose sum is σ = 142830702000. Its totient is φ = 25371067904.

The previous prime is 65720204237. The next prime is 65720204279. The reversal of 65720204260 is 6240202756.

It can be written as a sum of positive squares in 8 ways, for example, as 31539456 + 65688664804 = 5616^2 + 256298^2 .

It is a super-2 number, since 2×65720204260² (a number of 22 digits) contains 22 as substring.

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, 1456194 + ... + 1500646.

It is an arithmetic number, because the mean of its divisors is an integer number (2975639625).

Almost surely, 2^65720204260 is an apocalyptic number.

It is an amenable number.

65720204260 is an abundant number, since it is smaller than the sum of its proper divisors (77110497740).

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

65720204260 is a wasteful number, since it uses less digits than its factorization.

65720204260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47040 (or 47038 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 65720204260 in words is "sixty-five billion, seven hundred twenty million, two hundred four thousand, two hundred sixty".