23151154215149 has 2 divisors, whose sum is σ = 23151154215150. Its totient is φ = 23151154215148.

The previous prime is 23151154215103. The next prime is 23151154215209. The reversal of 23151154215149 is 94151245115132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16720329902500 + 6430824312649 = 4089050^2 + 2535907^2 .

It is a cyclic number.

It is not a de Polignac number, because 23151154215149 - 2²⁴ = 23151137437933 is a prime.

It is a super-2 number, since 2×23151154215149² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23151154215649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11575577107574 + 11575577107575.

It is an arithmetic number, because the mean of its divisors is an integer number (11575577107575).

Almost surely, 2^{23151154215149} is an apocalyptic number.

It is an amenable number.

23151154215149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23151154215149 is an equidigital number, since it uses as much as digits as its factorization.

23151154215149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 44.

The spelling of 23151154215149 in words is "twenty-three trillion, one hundred fifty-one billion, one hundred fifty-four million, two hundred fifteen thousand, one hundred forty-nine".