65574813813 has 16 divisors (see below), whose sum is σ = 92625664320. Its totient is φ = 41123000576.

The previous prime is 65574813797. The next prime is 65574813907. The reversal of 65574813813 is 31831847556.

It is a cyclic number.

It is not a de Polignac number, because 65574813813 - 2⁴ = 65574813797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65574813313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246783 + ... + 438236.

It is an arithmetic number, because the mean of its divisors is an integer number (5789104020).

Almost surely, 2^65574813813 is an apocalyptic number.

It is an amenable number.

65574813813 is a deficient number, since it is larger than the sum of its proper divisors (27050850507).

65574813813 is a wasteful number, since it uses less digits than its factorization.

65574813813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686916.

The product of its digits is 2419200, while the sum is 51.

The spelling of 65574813813 in words is "sixty-five billion, five hundred seventy-four million, eight hundred thirteen thousand, eight hundred thirteen".