128756330411522 has 16 divisors (see below), whose sum is σ = 211984767086112. Its totient is φ = 58166551941120.

The previous prime is 128756330411503. The next prime is 128756330411539. The reversal of 128756330411522 is 225114033657821.

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, 17952635903 + ... + 17952643074.

It is an arithmetic number, because the mean of its divisors is an integer number (13249047942882).

Almost surely, 2^{128756330411522} is an apocalyptic number.

128756330411522 is a deficient number, since it is larger than the sum of its proper divisors (83228436674590).

128756330411522 is a wasteful number, since it uses less digits than its factorization.

128756330411522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35905279153.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 128756330411522 in words is "one hundred twenty-eight trillion, seven hundred fifty-six billion, three hundred thirty million, four hundred eleven thousand, five hundred twenty-two".