23251544505 has 40 divisors (see below), whose sum is σ = 47634916032. Its totient is φ = 10629276192.

The previous prime is 23251544489. The next prime is 23251544539. The reversal of 23251544505 is 50544515232.

It is not a de Polignac number, because 23251544505 - 2⁴ = 23251544489 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23251544505.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4097967 + ... + 4103636.

Almost surely, 2^23251544505 is an apocalyptic number.

It is an amenable number.

23251544505 is an abundant number, since it is smaller than the sum of its proper divisors (24383371527).

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

23251544505 is an equidigital number, since it uses as much as digits as its factorization.

23251544505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8201627 (or 8201618 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 23251544505 in words is "twenty-three billion, two hundred fifty-one million, five hundred forty-four thousand, five hundred five".