128973745089 has 24 divisors (see below), whose sum is σ = 213281969472. Its totient is φ = 73570191840.

The previous prime is 128973745057. The next prime is 128973745111. The reversal of 128973745089 is 980547379821.

128973745089 is a `hidden beast` number, since 1 + 2 + 8 + 97 + 37 + 4 + 508 + 9 = 666.

It is not a de Polignac number, because 128973745089 - 2⁵ = 128973745057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (128973745039) 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, 1756674 + ... + 1828619.

It is an arithmetic number, because the mean of its divisors is an integer number (8886748728).

Almost surely, 2^128973745089 is an apocalyptic number.

It is an amenable number.

128973745089 is a deficient number, since it is larger than the sum of its proper divisors (84308224383).

128973745089 is a wasteful number, since it uses less digits than its factorization.

128973745089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585877 (or 3585874 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 128973745089 in words is "one hundred twenty-eight billion, nine hundred seventy-three million, seven hundred forty-five thousand, eighty-nine".