23551900387 has 12 divisors (see below), whose sum is σ = 25048409904. Its totient is φ = 22102789280.

The previous prime is 23551900373. The next prime is 23551900423. The reversal of 23551900387 is 78300915532.

It is not a de Polignac number, because 23551900387 - 2¹¹ = 23551898339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23551900327) 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 11 ways as a sum of consecutive naturals, for example, 117664 + ... + 246877.

It is an arithmetic number, because the mean of its divisors is an integer number (2087367492).

Almost surely, 2^23551900387 is an apocalyptic number.

23551900387 is a deficient number, since it is larger than the sum of its proper divisors (1496509517).

23551900387 is an equidigital number, since it uses as much as digits as its factorization.

23551900387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364670 (or 364617 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 23551900387 in words is "twenty-three billion, five hundred fifty-one million, nine hundred thousand, three hundred eighty-seven".