128074434315 has 16 divisors (see below), whose sum is σ = 211529389056. Its totient is φ = 66102933600.

The previous prime is 128074434311. The next prime is 128074434343. The reversal of 128074434315 is 513434470821.

It is not a de Polignac number, because 128074434315 - 2² = 128074434311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128074434311) 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, 137713981 + ... + 137714910.

It is an arithmetic number, because the mean of its divisors is an integer number (13220586816).

Almost surely, 2^128074434315 is an apocalyptic number.

128074434315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128074434315 is a deficient number, since it is larger than the sum of its proper divisors (83454954741).

128074434315 is a wasteful number, since it uses less digits than its factorization.

128074434315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275428930.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 128074434315 in words is "one hundred twenty-eight billion, seventy-four million, four hundred thirty-four thousand, three hundred fifteen".