128787877602 has 48 divisors (see below), whose sum is σ = 300298103352. Its totient is φ = 39741672960.

The previous prime is 128787877579. The next prime is 128787877649. The reversal of 128787877602 is 206778787821.

128787877602 is a `hidden beast` number, since 12 + 8 + 7 + 8 + 7 + 8 + 7 + 7 + 602 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 124770726441 + 4017151161 = 353229^2 + 63381^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128787877602.

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, 3431133 + ... + 3468464.

Almost surely, 2^128787877602 is an apocalyptic number.

128787877602 is an abundant number, since it is smaller than the sum of its proper divisors (171510225750).

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

128787877602 is a wasteful number, since it uses less digits than its factorization.

128787877602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6899683 (or 6899680 counting only the distinct ones).

The product of its (nonzero) digits is 29503488, while the sum is 63.

The spelling of 128787877602 in words is "one hundred twenty-eight billion, seven hundred eighty-seven million, eight hundred seventy-seven thousand, six hundred two".