23156313645149 has 2 divisors, whose sum is σ = 23156313645150. Its totient is φ = 23156313645148.

The previous prime is 23156313645119. The next prime is 23156313645233. The reversal of 23156313645149 is 94154631365132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20644982505625 + 2511331139524 = 4543675^2 + 1584718^2 .

It is a cyclic number.

It is not a de Polignac number, because 23156313645149 - 2¹⁶ = 23156313579613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23156313645149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23156313645109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11578156822574 + 11578156822575.

It is an arithmetic number, because the mean of its divisors is an integer number (11578156822575).

Almost surely, 2^{23156313645149} is an apocalyptic number.

It is an amenable number.

23156313645149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23156313645149 is an equidigital number, since it uses as much as digits as its factorization.

23156313645149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 53.

The spelling of 23156313645149 in words is "twenty-three trillion, one hundred fifty-six billion, three hundred thirteen million, six hundred forty-five thousand, one hundred forty-nine".