23151231552155 has 32 divisors (see below), whose sum is σ = 31778011238400. Its totient is φ = 15861258813312.

The previous prime is 23151231552149. The next prime is 23151231552181. The reversal of 23151231552155 is 55125513215132.

It is a cyclic number.

It is not a de Polignac number, because 23151231552155 - 2¹⁰ = 23151231551131 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 31 ways as a sum of consecutive naturals, for example, 303612464 + ... + 303688706.

It is an arithmetic number, because the mean of its divisors is an integer number (993062851200).

Almost surely, 2^{23151231552155} is an apocalyptic number.

23151231552155 is a deficient number, since it is larger than the sum of its proper divisors (8626779686245).

23151231552155 is a wasteful number, since it uses less digits than its factorization.

23151231552155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83723.

The product of its digits is 225000, while the sum is 41.

Adding to 23151231552155 its reverse (55125513215132), we get a palindrome (78276744767287).

The spelling of 23151231552155 in words is "twenty-three trillion, one hundred fifty-one billion, two hundred thirty-one million, five hundred fifty-two thousand, one hundred fifty-five".