23420431172635 has 80 divisors (see below), whose sum is σ = 33103250381376. Its totient is φ = 15905197615104.

The previous prime is 23420431172609. The next prime is 23420431172647. The reversal of 23420431172635 is 53627113402432.

It is not a de Polignac number, because 23420431172635 - 2¹⁹ = 23420430648347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23420431172591 and 23420431172600.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 712132162 + ... + 712165048.

Almost surely, 2^{23420431172635} is an apocalyptic number.

23420431172635 is a deficient number, since it is larger than the sum of its proper divisors (9682819208741).

23420431172635 is an equidigital number, since it uses as much as digits as its factorization.

23420431172635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33490 (or 33469 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 23420431172635 in words is "twenty-three trillion, four hundred twenty billion, four hundred thirty-one million, one hundred seventy-two thousand, six hundred thirty-five".