65750440893 has 4 divisors (see below), whose sum is σ = 87667254528. Its totient is φ = 43833627260.

The previous prime is 65750440871. The next prime is 65750440919. The reversal of 65750440893 is 39804405756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65750440893 - 2²¹ = 65748343741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65750440843) 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, 10958406813 + ... + 10958406818.

It is an arithmetic number, because the mean of its divisors is an integer number (21916813632).

Almost surely, 2^65750440893 is an apocalyptic number.

It is an amenable number.

65750440893 is a deficient number, since it is larger than the sum of its proper divisors (21916813635).

65750440893 is a wasteful number, since it uses less digits than its factorization.

65750440893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21916813634.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 65750440893 in words is "sixty-five billion, seven hundred fifty million, four hundred forty thousand, eight hundred ninety-three".