65923938433 has 4 divisors (see below), whose sum is σ = 66197481988. Its totient is φ = 65650394880.

The previous prime is 65923938419. The next prime is 65923938503. The reversal of 65923938433 is 33483932956.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42299326224 + 23624612209 = 205668^2 + 153703^2 .

It is a cyclic number.

It is not a de Polignac number, because 65923938433 - 2²¹ = 65921841281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65923938233) 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, 136771416 + ... + 136771897.

It is an arithmetic number, because the mean of its divisors is an integer number (16549370497).

Almost surely, 2^65923938433 is an apocalyptic number.

It is an amenable number.

65923938433 is a deficient number, since it is larger than the sum of its proper divisors (273543555).

65923938433 is a wasteful number, since it uses less digits than its factorization.

65923938433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273543554.

The product of its digits is 12597120, while the sum is 55.

The spelling of 65923938433 in words is "sixty-five billion, nine hundred twenty-three million, nine hundred thirty-eight thousand, four hundred thirty-three".