65121452417 has 12 divisors (see below), whose sum is σ = 75801470976. Its totient is φ = 55783060200.

The previous prime is 65121452413. The next prime is 65121452471. The reversal of 65121452417 is 71425412156.

It is not a de Polignac number, because 65121452417 - 2² = 65121452413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65121452413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342209 + ... + 497342.

It is an arithmetic number, because the mean of its divisors is an integer number (6316789248).

Almost surely, 2^65121452417 is an apocalyptic number.

It is an amenable number.

65121452417 is a deficient number, since it is larger than the sum of its proper divisors (10680018559).

65121452417 is a wasteful number, since it uses less digits than its factorization.

65121452417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841148 (or 841141 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The spelling of 65121452417 in words is "sixty-five billion, one hundred twenty-one million, four hundred fifty-two thousand, four hundred seventeen".