65894252943 has 4 divisors (see below), whose sum is σ = 87859003928. Its totient is φ = 43929501960.

The previous prime is 65894252929. The next prime is 65894252947. The reversal of 65894252943 is 34925249856.

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

It is not a de Polignac number, because 65894252943 - 2⁵ = 65894252911 is a prime.

It is a super-2 number, since 2×65894252943² (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 (65894252947) 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, 10982375488 + ... + 10982375493.

It is an arithmetic number, because the mean of its divisors is an integer number (21964750982).

Almost surely, 2^65894252943 is an apocalyptic number.

65894252943 is a deficient number, since it is larger than the sum of its proper divisors (21964750985).

65894252943 is a wasteful number, since it uses less digits than its factorization.

65894252943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21964750984.

The product of its digits is 18662400, while the sum is 57.

The spelling of 65894252943 in words is "sixty-five billion, eight hundred ninety-four million, two hundred fifty-two thousand, nine hundred forty-three".