23421507535 has 4 divisors (see below), whose sum is σ = 28105809048. Its totient is φ = 18737206024.

The previous prime is 23421507511. The next prime is 23421507547. The reversal of 23421507535 is 53570512432.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23421507535 - 2³¹ = 21274023887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23421507494 and 23421507503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342150749 + ... + 2342150758.

It is an arithmetic number, because the mean of its divisors is an integer number (7026452262).

Almost surely, 2^23421507535 is an apocalyptic number.

23421507535 is a deficient number, since it is larger than the sum of its proper divisors (4684301513).

23421507535 is an equidigital number, since it uses as much as digits as its factorization.

23421507535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684301512.

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 23421507535 in words is "twenty-three billion, four hundred twenty-one million, five hundred seven thousand, five hundred thirty-five".