128423117151 has 24 divisors (see below), whose sum is σ = 223157966720. Its totient is φ = 69522288336.

The previous prime is 128423117099. The next prime is 128423117167. The reversal of 128423117151 is 151711324821.

It is a happy number.

128423117151 is a `hidden beast` number, since 12 + 8 + 423 + 1 + 171 + 51 = 666.

It is not a de Polignac number, because 128423117151 - 2¹⁹ = 128422592863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128423117171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53642545 + ... + 53644938.

Almost surely, 2^128423117151 is an apocalyptic number.

128423117151 is a deficient number, since it is larger than the sum of its proper divisors (94734849569).

128423117151 is a wasteful number, since it uses less digits than its factorization.

128423117151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107287515 (or 107287512 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The spelling of 128423117151 in words is "one hundred twenty-eight billion, four hundred twenty-three million, one hundred seventeen thousand, one hundred fifty-one".