23215188475 has 18 divisors (see below), whose sum is σ = 30306265260. Its totient is φ = 17592152400.

The previous prime is 23215188473. The next prime is 23215188487. The reversal of 23215188475 is 57488151232.

It is a happy number.

It is not a de Polignac number, because 23215188475 - 2¹ = 23215188473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23215188473) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3317230 + ... + 3324220.

Almost surely, 2^23215188475 is an apocalyptic number.

23215188475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23215188475 is a deficient number, since it is larger than the sum of its proper divisors (7091076785).

23215188475 is an frugal number, since it uses more digits than its factorization.

23215188475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14011 (or 7015 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The spelling of 23215188475 in words is "twenty-three billion, two hundred fifteen million, one hundred eighty-eight thousand, four hundred seventy-five".