531373854989 has 4 divisors (see below), whose sum is σ = 531656652960. Its totient is φ = 531091057020.

The previous prime is 531373854959. The next prime is 531373854997. The reversal of 531373854989 is 989458373135.

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 531373854989 - 2²⁰ = 531372806413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531373854959) 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, 141396167 + ... + 141399924.

It is an arithmetic number, because the mean of its divisors is an integer number (132914163240).

Almost surely, 2^531373854989 is an apocalyptic number.

It is an amenable number.

531373854989 is a deficient number, since it is larger than the sum of its proper divisors (282797971).

531373854989 is a wasteful number, since it uses less digits than its factorization.

531373854989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282797970.

The product of its digits is 97977600, while the sum is 65.

The spelling of 531373854989 in words is "five hundred thirty-one billion, three hundred seventy-three million, eight hundred fifty-four thousand, nine hundred eighty-nine".