23154447647571 has 12 divisors (see below), whose sum is σ = 30966149772936. Its totient is φ = 15389662870560.

The previous prime is 23154447647561. The next prime is 23154447647603. The reversal of 23154447647571 is 17574674445132.

It is not a de Polignac number, because 23154447647571 - 2¹⁵ = 23154447614803 is a prime.

It is a super-2 number, since 2×23154447647571² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23154447647561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34894386 + ... + 35551751.

It is an arithmetic number, because the mean of its divisors is an integer number (2580512481078).

Almost surely, 2^{23154447647571} is an apocalyptic number.

23154447647571 is a deficient number, since it is larger than the sum of its proper divisors (7811702125365).

23154447647571 is an frugal number, since it uses more digits than its factorization.

23154447647571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70446802 (or 70446471 counting only the distinct ones).

The product of its digits is 79027200, while the sum is 60.

The spelling of 23154447647571 in words is "twenty-three trillion, one hundred fifty-four billion, four hundred forty-seven million, six hundred forty-seven thousand, five hundred seventy-one".