128079530623 has 16 divisors (see below), whose sum is σ = 140656111776. Its totient is φ = 115660247040.

The previous prime is 128079530617. The next prime is 128079530641. The reversal of 128079530623 is 326035970821.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128079530623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128079530603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392715 + ... + 1481827.

It is an arithmetic number, because the mean of its divisors is an integer number (8791006986).

Almost surely, 2^128079530623 is an apocalyptic number.

128079530623 is a deficient number, since it is larger than the sum of its proper divisors (12576581153).

128079530623 is a wasteful number, since it uses less digits than its factorization.

128079530623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89994.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 128079530623 in words is "one hundred twenty-eight billion, seventy-nine million, five hundred thirty thousand, six hundred twenty-three".