23305621251 has 32 divisors (see below), whose sum is σ = 34245066240. Its totient is φ = 13980729600.

The previous prime is 23305621247. The next prime is 23305621253. The reversal of 23305621251 is 15212650332.

It is not a de Polignac number, because 23305621251 - 2² = 23305621247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23305621253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4288506 + ... + 4293936.

It is an arithmetic number, because the mean of its divisors is an integer number (1070158320).

Almost surely, 2^23305621251 is an apocalyptic number.

23305621251 is a deficient number, since it is larger than the sum of its proper divisors (10939444989).

23305621251 is a wasteful number, since it uses less digits than its factorization.

23305621251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6747.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 23305621251 in words is "twenty-three billion, three hundred five million, six hundred twenty-one thousand, two hundred fifty-one".