23433373821 has 16 divisors (see below), whose sum is σ = 36706824000. Its totient is φ = 13109579520.

The previous prime is 23433373819. The next prime is 23433373861. The reversal of 23433373821 is 12837333432.

It is not a de Polignac number, because 23433373821 - 2¹ = 23433373819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 23433373821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23433373861) 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, 27311196 + ... + 27312053.

It is an arithmetic number, because the mean of its divisors is an integer number (2294176500).

Almost surely, 2^23433373821 is an apocalyptic number.

It is an amenable number.

23433373821 is a deficient number, since it is larger than the sum of its proper divisors (13273450179).

23433373821 is a wasteful number, since it uses less digits than its factorization.

23433373821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54623276.

The product of its digits is 217728, while the sum is 39.

The spelling of 23433373821 in words is "twenty-three billion, four hundred thirty-three million, three hundred seventy-three thousand, eight hundred twenty-one".