23740570553 has 4 divisors (see below), whose sum is σ = 27132080640. Its totient is φ = 20349060468.

The previous prime is 23740570531. The next prime is 23740570561. The reversal of 23740570553 is 35507504732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23740570553 - 2⁶ = 23740570489 is a prime.

It is a super-2 number, since 2×23740570553² (a number of 22 digits) contains 22 as substring.

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 23740570553.

It is not an unprimeable number, because it can be changed into a prime (23740578553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695755033 + ... + 1695755046.

It is an arithmetic number, because the mean of its divisors is an integer number (6783020160).

Almost surely, 2^23740570553 is an apocalyptic number.

It is an amenable number.

23740570553 is a deficient number, since it is larger than the sum of its proper divisors (3391510087).

23740570553 is an equidigital number, since it uses as much as digits as its factorization.

23740570553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391510086.

The product of its (nonzero) digits is 441000, while the sum is 41.

The spelling of 23740570553 in words is "twenty-three billion, seven hundred forty million, five hundred seventy thousand, five hundred fifty-three".