128398820030 has 32 divisors (see below), whose sum is σ = 248912050464. Its totient is φ = 47405771136.

The previous prime is 128398819933. The next prime is 128398820047. The reversal of 128398820030 is 30028893821.

128398820030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3800372 + ... + 3834008.

It is an arithmetic number, because the mean of its divisors is an integer number (7778501577).

Almost surely, 2^128398820030 is an apocalyptic number.

128398820030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128398820030 is a deficient number, since it is larger than the sum of its proper divisors (120513230434).

128398820030 is a wasteful number, since it uses less digits than its factorization.

128398820030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63020.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 128398820030 in words is "one hundred twenty-eight billion, three hundred ninety-eight million, eight hundred twenty thousand, thirty".