65251574783 has 4 divisors (see below), whose sum is σ = 65357331600. Its totient is φ = 65145817968.

The previous prime is 65251574681. The next prime is 65251574789. The reversal of 65251574783 is 38747515256.

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

It is a cyclic number.

It is not a de Polignac number, because 65251574783 - 2¹⁴ = 65251558399 is a prime.

It is a super-2 number, since 2×65251574783² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65251574789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52877483 + ... + 52878716.

It is an arithmetic number, because the mean of its divisors is an integer number (16339332900).

Almost surely, 2^65251574783 is an apocalyptic number.

65251574783 is a deficient number, since it is larger than the sum of its proper divisors (105756817).

65251574783 is a wasteful number, since it uses less digits than its factorization.

65251574783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105756816.

The product of its digits is 7056000, while the sum is 53.

The spelling of 65251574783 in words is "sixty-five billion, two hundred fifty-one million, five hundred seventy-four thousand, seven hundred eighty-three".