65137272512 has 168 divisors, whose sum is σ = 143863649280. Its totient is φ = 29237345280.

The previous prime is 65137272493. The next prime is 65137272517. The reversal of 65137272512 is 21527273156.

It is a self number, because there is not a number n which added to its sum of digits gives 65137272512.

It is not an unprimeable number, because it can be changed into a prime (65137272517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65728337 + ... + 65729327.

Almost surely, 2^65137272512 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 65137272512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71931824640).

65137272512 is an abundant number, since it is smaller than the sum of its proper divisors (78726376768).

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

65137272512 is a wasteful number, since it uses less digits than its factorization.

65137272512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191 (or 1168 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The spelling of 65137272512 in words is "sixty-five billion, one hundred thirty-seven million, two hundred seventy-two thousand, five hundred twelve".