65631381096 has 32 divisors (see below), whose sum is σ = 164116895040. Its totient is φ = 21872001408.

The previous prime is 65631381077. The next prime is 65631381097. The reversal of 65631381096 is 69018313656.

It is a super-2 number, since 2×65631381096² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65631381097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215076 + ... + 421331.

It is an arithmetic number, because the mean of its divisors is an integer number (5128652970).

Almost surely, 2^65631381096 is an apocalyptic number.

It is an amenable number.

65631381096 is an abundant number, since it is smaller than the sum of its proper divisors (98485513944).

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

65631381096 is a wasteful number, since it uses less digits than its factorization.

65631381096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640713 (or 640709 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 65631381096 in words is "sixty-five billion, six hundred thirty-one million, three hundred eighty-one thousand, ninety-six".