23547231493489 has 4 divisors (see below), whose sum is σ = 25687888902000. Its totient is φ = 21406574084980.

The previous prime is 23547231493477. The next prime is 23547231493529. The reversal of 23547231493489 is 98439413274532.

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 23547231493489 - 2¹⁵ = 23547231460721 is a prime.

It is a super-2 number, since 2×23547231493489² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23547231493489.

It is not an unprimeable number, because it can be changed into a prime (23547231493589) 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, 1070328704239 + ... + 1070328704260.

It is an arithmetic number, because the mean of its divisors is an integer number (6421972225500).

Almost surely, 2^{23547231493489} is an apocalyptic number.

It is an amenable number.

23547231493489 is a deficient number, since it is larger than the sum of its proper divisors (2140657408511).

23547231493489 is a wasteful number, since it uses less digits than its factorization.

23547231493489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140657408510.

The product of its digits is 156764160, while the sum is 64.

The spelling of 23547231493489 in words is "twenty-three trillion, five hundred forty-seven billion, two hundred thirty-one million, four hundred ninety-three thousand, four hundred eighty-nine".