23521405426 has 8 divisors (see below), whose sum is σ = 35325615024. Its totient is φ = 11746200420.

The previous prime is 23521405393. The next prime is 23521405483. The reversal of 23521405426 is 62450412532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 23521405391 and 23521405400.

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, 7249120 + ... + 7252363.

It is an arithmetic number, because the mean of its divisors is an integer number (4415701878).

Almost surely, 2^23521405426 is an apocalyptic number.

23521405426 is a deficient number, since it is larger than the sum of its proper divisors (11804209598).

23521405426 is a wasteful number, since it uses less digits than its factorization.

23521405426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14502296.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 23521405426 its reverse (62450412532), we get a palindrome (85971817958).

The spelling of 23521405426 in words is "twenty-three billion, five hundred twenty-one million, four hundred five thousand, four hundred twenty-six".