128518486390 has 16 divisors (see below), whose sum is σ = 264380886432. Its totient is φ = 44063481024.

The previous prime is 128518486381. The next prime is 128518486427. The reversal of 128518486390 is 93684815821.

It is a happy number.

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, 917989119 + ... + 917989258.

It is an arithmetic number, because the mean of its divisors is an integer number (16523805402).

Almost surely, 2^128518486390 is an apocalyptic number.

128518486390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128518486390 is an abundant number, since it is smaller than the sum of its proper divisors (135862400042).

128518486390 is a wasteful number, since it uses less digits than its factorization.

128518486390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835978391.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 128518486390 in words is "one hundred twenty-eight billion, five hundred eighteen million, four hundred eighty-six thousand, three hundred ninety".