128278882045944 has 96 divisors (see below), whose sum is σ = 397057285048320. Its totient is φ = 36650776615488.

The previous prime is 128278882045859. The next prime is 128278882045957. The reversal of 128278882045944 is 449540288872821.

128278882045944 is a `hidden beast` number, since 1 + 2 + 8 + 2 + 7 + 8 + 8 + 8 + 20 + 4 + 594 + 4 = 666.

It is a super-2 number, since 2×128278882045944² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 57391057 + ... + 59584319.

It is an arithmetic number, because the mean of its divisors is an integer number (4136013385920).

Almost surely, 2^{128278882045944} is an apocalyptic number.

128278882045944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128278882045944 is an abundant number, since it is smaller than the sum of its proper divisors (268778403002376).

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

128278882045944 is a wasteful number, since it uses less digits than its factorization.

128278882045944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309329 (or 2309322 counting only the distinct ones).

The product of its (nonzero) digits is 660602880, while the sum is 72.

The spelling of 128278882045944 in words is "one hundred twenty-eight trillion, two hundred seventy-eight billion, eight hundred eighty-two million, forty-five thousand, nine hundred forty-four".