65540958472 has 32 divisors (see below), whose sum is σ = 137684329920. Its totient is φ = 28986171840.

The previous prime is 65540958437. The next prime is 65540958499. The reversal of 65540958472 is 27485904556.

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, 10061388 + ... + 10067899.

It is an arithmetic number, because the mean of its divisors is an integer number (4302635310).

Almost surely, 2^65540958472 is an apocalyptic number.

It is an amenable number.

65540958472 is an abundant number, since it is smaller than the sum of its proper divisors (72143371448).

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

65540958472 is a wasteful number, since it uses less digits than its factorization.

65540958472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20129341 (or 20129337 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 55.

The spelling of 65540958472 in words is "sixty-five billion, five hundred forty million, nine hundred fifty-eight thousand, four hundred seventy-two".