65072721260 has 24 divisors (see below), whose sum is σ = 141364878480. Its totient is φ = 25131533504.

The previous prime is 65072721253. The next prime is 65072721281. The reversal of 65072721260 is 6212727056.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56096594 + ... + 56097753.

It is an arithmetic number, because the mean of its divisors is an integer number (5890203270).

Almost surely, 2^65072721260 is an apocalyptic number.

It is an amenable number.

65072721260 is an abundant number, since it is smaller than the sum of its proper divisors (76292157220).

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

65072721260 is a wasteful number, since it uses less digits than its factorization.

65072721260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112194385 (or 112194383 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 65072721260 in words is "sixty-five billion, seventy-two million, seven hundred twenty-one thousand, two hundred sixty".