128418486590 has 16 divisors (see below), whose sum is σ = 231247783872. Its totient is φ = 51346392864.

The previous prime is 128418486587. The next prime is 128418486607. The reversal of 128418486590 is 95684814821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2599529 + ... + 2648468.

It is an arithmetic number, because the mean of its divisors is an integer number (14452986492).

Almost surely, 2^128418486590 is an apocalyptic number.

128418486590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128418486590 is a deficient number, since it is larger than the sum of its proper divisors (102829297282).

128418486590 is a wasteful number, since it uses less digits than its factorization.

128418486590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250451.

The product of its (nonzero) digits is 4423680, while the sum is 56.

The spelling of 128418486590 in words is "one hundred twenty-eight billion, four hundred eighteen million, four hundred eighty-six thousand, five hundred ninety".