23152135477 has 2 divisors, whose sum is σ = 23152135478. Its totient is φ = 23152135476.

The previous prime is 23152135463. The next prime is 23152135519. The reversal of 23152135477 is 77453125132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16538217201 + 6613918276 = 128601^2 + 81326^2 .

It is a cyclic number.

It is not a de Polignac number, because 23152135477 - 2²³ = 23143746869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23152135177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11576067738 + 11576067739.

It is an arithmetic number, because the mean of its divisors is an integer number (11576067739).

Almost surely, 2^23152135477 is an apocalyptic number.

It is an amenable number.

23152135477 is a deficient number, since it is larger than the sum of its proper divisors (1).

23152135477 is an equidigital number, since it uses as much as digits as its factorization.

23152135477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 40.

The spelling of 23152135477 in words is "twenty-three billion, one hundred fifty-two million, one hundred thirty-five thousand, four hundred seventy-seven".