65709099648 has 96 divisors (see below), whose sum is σ = 197305935840. Its totient is φ = 20950718976.

The previous prime is 65709099637. The next prime is 65709099683. The reversal of 65709099648 is 84699090756.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1213486 + ... + 1266477.

It is an arithmetic number, because the mean of its divisors is an integer number (2055270165).

Almost surely, 2^65709099648 is an apocalyptic number.

It is an amenable number.

65709099648 is an abundant number, since it is smaller than the sum of its proper divisors (131596836192).

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

65709099648 is a wasteful number, since it uses less digits than its factorization.

65709099648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480006 (or 2479991 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 65709099648 in words is "sixty-five billion, seven hundred nine million, ninety-nine thousand, six hundred forty-eight".