128216712830 has 16 divisors (see below), whose sum is σ = 230810158800. Its totient is φ = 51282223872.

The previous prime is 128216712803. The next prime is 128216712853. The reversal of 128216712830 is 38217612821.

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, 435680 + ... + 668019.

It is an arithmetic number, because the mean of its divisors is an integer number (14425634925).

Almost surely, 2^128216712830 is an apocalyptic number.

128216712830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128216712830 is a deficient number, since it is larger than the sum of its proper divisors (102593445970).

128216712830 is a wasteful number, since it uses less digits than its factorization.

128216712830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115323.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 128216712830 in words is "one hundred twenty-eight billion, two hundred sixteen million, seven hundred twelve thousand, eight hundred thirty".