23152531551 has 8 divisors (see below), whose sum is σ = 31393263360. Its totient is φ = 15173410392.

The previous prime is 23152531541. The next prime is 23152531579. The reversal of 23152531551 is 15513525132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23152531551 - 2²¹ = 23150434399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23152531511) 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 7 ways as a sum of consecutive naturals, for example, 65402455 + ... + 65402808.

It is an arithmetic number, because the mean of its divisors is an integer number (3924157920).

Almost surely, 2^23152531551 is an apocalyptic number.

23152531551 is a deficient number, since it is larger than the sum of its proper divisors (8240731809).

23152531551 is a wasteful number, since it uses less digits than its factorization.

23152531551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130805325.

The product of its digits is 22500, while the sum is 33.

The spelling of 23152531551 in words is "twenty-three billion, one hundred fifty-two million, five hundred thirty-one thousand, five hundred fifty-one".