128891403054 has 48 divisors (see below), whose sum is σ = 283264581600. Its totient is φ = 42348720960.

The previous prime is 128891403049. The next prime is 128891403061. The reversal of 128891403054 is 450304198821.

128891403054 is a `hidden beast` number, since 128 + 89 + 140 + 305 + 4 = 666.

It is a super-2 number, since 2×128891403054² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7092772 + ... + 7110920.

It is an arithmetic number, because the mean of its divisors is an integer number (5901345450).

Almost surely, 2^128891403054 is an apocalyptic number.

128891403054 is an abundant number, since it is smaller than the sum of its proper divisors (154373178546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128891403054 is a wasteful number, since it uses less digits than its factorization.

128891403054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23785 (or 23782 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 128891403054 in words is "one hundred twenty-eight billion, eight hundred ninety-one million, four hundred three thousand, fifty-four".