128985262708 has 6 divisors (see below), whose sum is σ = 225724209746. Its totient is φ = 64492631352.

The previous prime is 128985262621. The next prime is 128985262729. The reversal of 128985262708 is 807262589821.

It can be written as a sum of positive squares in only one way, i.e., 111190236304 + 17795026404 = 333452^2 + 133398^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16123157835 + ... + 16123157842.

Almost surely, 2^128985262708 is an apocalyptic number.

It is an amenable number.

128985262708 is a deficient number, since it is larger than the sum of its proper divisors (96738947038).

128985262708 is a wasteful number, since it uses less digits than its factorization.

128985262708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32246315681 (or 32246315679 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 128985262708 in words is "one hundred twenty-eight billion, nine hundred eighty-five million, two hundred sixty-two thousand, seven hundred eight".