23206163555 has 4 divisors (see below), whose sum is σ = 27847396272. Its totient is φ = 18564930840.

The previous prime is 23206163543. The next prime is 23206163609. The reversal of 23206163555 is 55536160232.

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

It is a de Polignac number, because none of the positive numbers 2^k-23206163555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2320616351 + ... + 2320616360.

It is an arithmetic number, because the mean of its divisors is an integer number (6961849068).

Almost surely, 2^23206163555 is an apocalyptic number.

23206163555 is a deficient number, since it is larger than the sum of its proper divisors (4641232717).

23206163555 is an equidigital number, since it uses as much as digits as its factorization.

23206163555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641232716.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 23206163555 in words is "twenty-three billion, two hundred six million, one hundred sixty-three thousand, five hundred fifty-five".