23681551435 has 4 divisors (see below), whose sum is σ = 28417861728. Its totient is φ = 18945241144.

The previous prime is 23681551391. The next prime is 23681551457. The reversal of 23681551435 is 53415518632.

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 23681551435 - 2⁷ = 23681551307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23681551391 and 23681551400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2368155139 + ... + 2368155148.

It is an arithmetic number, because the mean of its divisors is an integer number (7104465432).

Almost surely, 2^23681551435 is an apocalyptic number.

23681551435 is a deficient number, since it is larger than the sum of its proper divisors (4736310293).

23681551435 is an equidigital number, since it uses as much as digits as its factorization.

23681551435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736310292.

The product of its digits is 432000, while the sum is 43.

The spelling of 23681551435 in words is "twenty-three billion, six hundred eighty-one million, five hundred fifty-one thousand, four hundred thirty-five".