128788074987255 has 96 divisors (see below), whose sum is σ = 233924622437376. Its totient is φ = 65422937513472.

The previous prime is 128788074987251. The next prime is 128788074987259. The reversal of 128788074987255 is 552789470887821.

128788074987255 is a `hidden beast` number, since 1 + 2 + 8 + 7 + 8 + 8 + 0 + 7 + 498 + 72 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (128788074987251) and next prime (128788074987259).

It is not a de Polignac number, because 128788074987255 - 2² = 128788074987251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128788074987251) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 266603419 + ... + 267086051.

It is an arithmetic number, because the mean of its divisors is an integer number (2436714817056).

Almost surely, 2^{128788074987255} is an apocalyptic number.

128788074987255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128788074987255 is a deficient number, since it is larger than the sum of its proper divisors (105136547450121).

128788074987255 is a wasteful number, since it uses less digits than its factorization.

128788074987255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483757 (or 483754 counting only the distinct ones).

The product of its (nonzero) digits is 5057740800, while the sum is 81.

The spelling of 128788074987255 in words is "one hundred twenty-eight trillion, seven hundred eighty-eight billion, seventy-four million, nine hundred eighty-seven thousand, two hundred fifty-five".