23775050721 has 16 divisors (see below), whose sum is σ = 34078464000. Its totient is φ = 14696334288.

The previous prime is 23775050659. The next prime is 23775050731. The reversal of 23775050721 is 12705057732.

It is not a de Polignac number, because 23775050721 - 2¹⁸ = 23774788577 is a prime.

It is a super-2 number, since 2×23775050721² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23775050721.

It is not an unprimeable number, because it can be changed into a prime (23775050731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4434621 + ... + 4439978.

It is an arithmetic number, because the mean of its divisors is an integer number (2129904000).

Almost surely, 2^23775050721 is an apocalyptic number.

It is an amenable number.

23775050721 is a deficient number, since it is larger than the sum of its proper divisors (10303413279).

23775050721 is a wasteful number, since it uses less digits than its factorization.

23775050721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8874668.

The product of its (nonzero) digits is 102900, while the sum is 39.

The spelling of 23775050721 in words is "twenty-three billion, seven hundred seventy-five million, fifty thousand, seven hundred twenty-one".