128057529623 has 2 divisors, whose sum is σ = 128057529624. Its totient is φ = 128057529622.

The previous prime is 128057529527. The next prime is 128057529629. The reversal of 128057529623 is 326925750821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (326925750821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128057529623 - 2¹⁸ = 128057267479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128057529629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64028764811 + 64028764812.

It is an arithmetic number, because the mean of its divisors is an integer number (64028764812).

Almost surely, 2^128057529623 is an apocalyptic number.

128057529623 is a deficient number, since it is larger than the sum of its proper divisors (1).

128057529623 is an equidigital number, since it uses as much as digits as its factorization.

128057529623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 128057529623 in words is "one hundred twenty-eight billion, fifty-seven million, five hundred twenty-nine thousand, six hundred twenty-three".