65954229823 has 4 divisors (see below), whose sum is σ = 68228513640. Its totient is φ = 63679946008.

The previous prime is 65954229821. The next prime is 65954229827. The reversal of 65954229823 is 32892245956.

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 65954229823 - 2¹ = 65954229821 is a prime.

It is a super-2 number, since 2×65954229823² (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 (65954229821) 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, 1137141865 + ... + 1137141922.

It is an arithmetic number, because the mean of its divisors is an integer number (17057128410).

Almost surely, 2^65954229823 is an apocalyptic number.

65954229823 is a deficient number, since it is larger than the sum of its proper divisors (2274283817).

65954229823 is a wasteful number, since it uses less digits than its factorization.

65954229823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274283816.

The product of its digits is 9331200, while the sum is 55.

The spelling of 65954229823 in words is "sixty-five billion, nine hundred fifty-four million, two hundred twenty-nine thousand, eight hundred twenty-three".