51532575689 has 4 divisors (see below), whose sum is σ = 58894372224. Its totient is φ = 44170779156.

The previous prime is 51532575683. The next prime is 51532575719. The reversal of 51532575689 is 98657523515.

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 not a de Polignac number, because 51532575689 - 2²⁴ = 51515798473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51532575683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3680898257 + ... + 3680898270.

It is an arithmetic number, because the mean of its divisors is an integer number (14723593056).

Almost surely, 2^51532575689 is an apocalyptic number.

It is an amenable number.

51532575689 is a deficient number, since it is larger than the sum of its proper divisors (7361796535).

51532575689 is an equidigital number, since it uses as much as digits as its factorization.

51532575689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7361796534.

The product of its digits is 11340000, while the sum is 56.

The spelling of 51532575689 in words is "fifty-one billion, five hundred thirty-two million, five hundred seventy-five thousand, six hundred eighty-nine".