23550442155 has 24 divisors (see below), whose sum is σ = 40860827280. Its totient is φ = 12547909440.

The previous prime is 23550442133. The next prime is 23550442241. The reversal of 23550442155 is 55124405532.

It is not a de Polignac number, because 23550442155 - 2¹¹ = 23550440107 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210345 + ... + 302234.

It is an arithmetic number, because the mean of its divisors is an integer number (1702534470).

Almost surely, 2^23550442155 is an apocalyptic number.

23550442155 is a deficient number, since it is larger than the sum of its proper divisors (17310385125).

23550442155 is a wasteful number, since it uses less digits than its factorization.

23550442155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513611 (or 513608 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 23550442155 its reverse (55124405532), we get a palindrome (78674847687).

The spelling of 23550442155 in words is "twenty-three billion, five hundred fifty million, four hundred forty-two thousand, one hundred fifty-five".