128611487958 has 16 divisors (see below), whose sum is σ = 270761027520. Its totient is φ = 40614154056.

The previous prime is 128611487933. The next prime is 128611487959. The reversal of 128611487958 is 859784116821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128611487959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564085360 + ... + 564085587.

It is an arithmetic number, because the mean of its divisors is an integer number (16922564220).

Almost surely, 2^128611487958 is an apocalyptic number.

128611487958 is an abundant number, since it is smaller than the sum of its proper divisors (142149539562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128611487958 is a wasteful number, since it uses less digits than its factorization.

128611487958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128170971.

The product of its digits is 7741440, while the sum is 60.

The spelling of 128611487958 in words is "one hundred twenty-eight billion, six hundred eleven million, four hundred eighty-seven thousand, nine hundred fifty-eight".