23773042621 has 4 divisors (see below), whose sum is σ = 23784138112. Its totient is φ = 23761947132.

The previous prime is 23773042609. The next prime is 23773042703. The reversal of 23773042621 is 12624037732.

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 23773042621 - 2¹³ = 23773034429 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 (23773042021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5544531 + ... + 5548816.

It is an arithmetic number, because the mean of its divisors is an integer number (5946034528).

Almost surely, 2^23773042621 is an apocalyptic number.

It is an amenable number.

23773042621 is a deficient number, since it is larger than the sum of its proper divisors (11095491).

23773042621 is a wasteful number, since it uses less digits than its factorization.

23773042621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11095490.

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 23773042621 in words is "twenty-three billion, seven hundred seventy-three million, forty-two thousand, six hundred twenty-one".