23145780474 has 12 divisors (see below), whose sum is σ = 50149191066. Its totient is φ = 7715260152.

The previous prime is 23145780451. The next prime is 23145780479. The reversal of 23145780474 is 47408754132.

23145780474 is a `hidden beast` number, since 2 + 3 + 1 + 4 + 578 + 0 + 4 + 74 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16428830625 + 6716949849 = 128175^2 + 81957^2 .

It is not an unprimeable number, because it can be changed into a prime (23145780479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642938329 + ... + 642938364.

Almost surely, 2^23145780474 is an apocalyptic number.

23145780474 is an abundant number, since it is smaller than the sum of its proper divisors (27003410592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23145780474 is a wasteful number, since it uses less digits than its factorization.

23145780474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285876701 (or 1285876698 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 23145780474 in words is "twenty-three billion, one hundred forty-five million, seven hundred eighty thousand, four hundred seventy-four".