65689274091 has 32 divisors (see below), whose sum is σ = 102962331648. Its totient is φ = 36471728160.

The previous prime is 65689274023. The next prime is 65689274111. The reversal of 65689274091 is 19047298656.

It is not a de Polignac number, because 65689274091 - 2²⁵ = 65655719659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65689274011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17961 + ... + 362906.

It is an arithmetic number, because the mean of its divisors is an integer number (3217572864).

Almost surely, 2^65689274091 is an apocalyptic number.

65689274091 is a deficient number, since it is larger than the sum of its proper divisors (37273057557).

65689274091 is a wasteful number, since it uses less digits than its factorization.

65689274091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381111.

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 65689274091 in words is "sixty-five billion, six hundred eighty-nine million, two hundred seventy-four thousand, ninety-one".