128402694615 has 32 divisors (see below), whose sum is σ = 221606513856. Its totient is φ = 63111121920.

The previous prime is 128402694593. The next prime is 128402694631. The reversal of 128402694615 is 516496204821.

It is not a de Polignac number, because 128402694615 - 2⁷ = 128402694487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413296 + ... + 653925.

It is an arithmetic number, because the mean of its divisors is an integer number (6925203558).

Almost surely, 2^128402694615 is an apocalyptic number.

128402694615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128402694615 is a deficient number, since it is larger than the sum of its proper divisors (93203819241).

128402694615 is a wasteful number, since it uses less digits than its factorization.

128402694615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067859.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 128402694615 in words is "one hundred twenty-eight billion, four hundred two million, six hundred ninety-four thousand, six hundred fifteen".