128031725645723 has 8 divisors (see below), whose sum is σ = 131009554598208. Its totient is φ = 125053912464264.

The previous prime is 128031725645713. The next prime is 128031725645731. The reversal of 128031725645723 is 327546527130821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128031725645723 - 2¹⁰ = 128031725644699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128031725645713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13354736 + ... + 20842562.

It is an arithmetic number, because the mean of its divisors is an integer number (16376194324776).

Almost surely, 2^{128031725645723} is an apocalyptic number.

128031725645723 is a deficient number, since it is larger than the sum of its proper divisors (2977828952485).

128031725645723 is an equidigital number, since it uses as much as digits as its factorization.

128031725645723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7885513.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 128031725645723 in words is "one hundred twenty-eight trillion, thirty-one billion, seven hundred twenty-five million, six hundred forty-five thousand, seven hundred twenty-three".