128849178202 has 8 divisors (see below), whose sum is σ = 193275359316. Its totient is φ = 64424058432.

The previous prime is 128849178187. The next prime is 128849178229. The reversal of 128849178202 is 202871948821.

128849178202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 128794136641 + 55041561 = 358879^2 + 7419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128849178202² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128849178202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204708 + ... + 547360.

Almost surely, 2^128849178202 is an apocalyptic number.

128849178202 is a deficient number, since it is larger than the sum of its proper divisors (64426181114).

128849178202 is a wasteful number, since it uses less digits than its factorization.

128849178202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530672.

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 128849178202 in words is "one hundred twenty-eight billion, eight hundred forty-nine million, one hundred seventy-eight thousand, two hundred two".