65997541514 has 4 divisors (see below), whose sum is σ = 98996312274. Its totient is φ = 32998770756.

The previous prime is 65997541513. The next prime is 65997541529. The reversal of 65997541514 is 41514579956.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41687430625 + 24310110889 = 204175^2 + 155917^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65997541514.

It is not an unprimeable number, because it can be changed into a prime (65997541513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16499385377 + ... + 16499385380.

Almost surely, 2^65997541514 is an apocalyptic number.

65997541514 is a deficient number, since it is larger than the sum of its proper divisors (32998770760).

65997541514 is a wasteful number, since it uses less digits than its factorization.

65997541514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32998770759.

The product of its digits is 6804000, while the sum is 56.

The spelling of 65997541514 in words is "sixty-five billion, nine hundred ninety-seven million, five hundred forty-one thousand, five hundred fourteen".