23815042973 has 4 divisors (see below), whose sum is σ = 24850479648. Its totient is φ = 22779606300.

The previous prime is 23815042961. The next prime is 23815042981. The reversal of 23815042973 is 37924051832.

It is a happy number.

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 23815042973 - 2⁴ = 23815042957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23815042373) 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, 517718303 + ... + 517718348.

It is an arithmetic number, because the mean of its divisors is an integer number (6212619912).

Almost surely, 2^23815042973 is an apocalyptic number.

23815042973 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23815042973 is a deficient number, since it is larger than the sum of its proper divisors (1035436675).

23815042973 is a wasteful number, since it uses less digits than its factorization.

23815042973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035436674.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 23815042973 in words is "twenty-three billion, eight hundred fifteen million, forty-two thousand, nine hundred seventy-three".