128187886337 has 6 divisors (see below), whose sum is σ = 149116520898. Its totient is φ = 109875331104.

The previous prime is 128187886331. The next prime is 128187886357. The reversal of 128187886337 is 733688781821.

It can be written as a sum of positive squares in only one way, i.e., 109502089921 + 18685796416 = 330911^2 + 136696^2 .

It is not a de Polignac number, because 128187886337 - 2⁸ = 128187886081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128187886337.

It is not an unprimeable number, because it can be changed into a prime (128187886331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1308039608 + ... + 1308039705.

It is an arithmetic number, because the mean of its divisors is an integer number (24852753483).

Almost surely, 2^128187886337 is an apocalyptic number.

It is an amenable number.

128187886337 is a deficient number, since it is larger than the sum of its proper divisors (20928634561).

128187886337 is an equidigital number, since it uses as much as digits as its factorization.

128187886337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616079327 (or 2616079320 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 62.

The spelling of 128187886337 in words is "one hundred twenty-eight billion, one hundred eighty-seven million, eight hundred eighty-six thousand, three hundred thirty-seven".