23071745155 has 4 divisors (see below), whose sum is σ = 27686094192. Its totient is φ = 18457396120.

The previous prime is 23071745141. The next prime is 23071745231. The reversal of 23071745155 is 55154717032.

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

It is not a de Polignac number, because 23071745155 - 2¹⁹ = 23071220867 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 2307174511 + ... + 2307174520.

It is an arithmetic number, because the mean of its divisors is an integer number (6921523548).

Almost surely, 2^23071745155 is an apocalyptic number.

23071745155 is a deficient number, since it is larger than the sum of its proper divisors (4614349037).

23071745155 is an equidigital number, since it uses as much as digits as its factorization.

23071745155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614349036.

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 23071745155 in words is "twenty-three billion, seventy-one million, seven hundred forty-five thousand, one hundred fifty-five".