23607898921 has 4 divisors (see below), whose sum is σ = 23608268500. Its totient is φ = 23607529344.

The previous prime is 23607898913. The next prime is 23607898987. The reversal of 23607898921 is 12989870632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 622003600 + 22985895321 = 24940^2 + 151611^2 .

It is a cyclic number.

It is not a de Polignac number, because 23607898921 - 2³ = 23607898913 is a prime.

It is a deceptive number, since it divides R_23607898920.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23607890921) 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, 61596 + ... + 225853.

It is an arithmetic number, because the mean of its divisors is an integer number (5902067125).

Almost surely, 2^23607898921 is an apocalyptic number.

23607898921 is the 82129-th nonagonal number.

It is an amenable number.

23607898921 is a deficient number, since it is larger than the sum of its proper divisors (369579).

23607898921 is an equidigital number, since it uses as much as digits as its factorization.

23607898921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369578.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 23607898921 in words is "twenty-three billion, six hundred seven million, eight hundred ninety-eight thousand, nine hundred twenty-one".