65631101889 has 16 divisors (see below), whose sum is σ = 90558563840. Its totient is φ = 42235966080.

The previous prime is 65631101857. The next prime is 65631101897. The reversal of 65631101889 is 98810113656.

It is not a de Polignac number, because 65631101889 - 2⁵ = 65631101857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65631101819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 851884 + ... + 925725.

It is an arithmetic number, because the mean of its divisors is an integer number (5659910240).

Almost surely, 2^65631101889 is an apocalyptic number.

It is an amenable number.

65631101889 is a deficient number, since it is larger than the sum of its proper divisors (24927461951).

65631101889 is a wasteful number, since it uses less digits than its factorization.

65631101889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778040.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 65631101889 in words is "sixty-five billion, six hundred thirty-one million, one hundred one thousand, eight hundred eighty-nine".