65139694113672 has 96 divisors (see below), whose sum is σ = 178190322598080. Its totient is φ = 21495403036800.

The previous prime is 65139694113629. The next prime is 65139694113733. The reversal of 65139694113672 is 27631149693156.

65139694113672 is a `hidden beast` number, since 6 + 5 + 1 + 396 + 9 + 41 + 136 + 72 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54699933 + ... + 55878099.

It is an arithmetic number, because the mean of its divisors is an integer number (1856149193730).

Almost surely, 2^{65139694113672} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65139694113672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89095161299040).

65139694113672 is an abundant number, since it is smaller than the sum of its proper divisors (113050628484408).

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

65139694113672 is a wasteful number, since it uses less digits than its factorization.

65139694113672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185883 (or 1185876 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 63.

The spelling of 65139694113672 in words is "sixty-five trillion, one hundred thirty-nine billion, six hundred ninety-four million, one hundred thirteen thousand, six hundred seventy-two".