909128067868 has 12 divisors (see below), whose sum is σ = 1591034024272. Its totient is φ = 454546918080.

The previous prime is 909128067853. The next prime is 909128067871. The reversal of 909128067868 is 868760821909.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4159080 + ... + 4372207.

Almost surely, 2^909128067868 is an apocalyptic number.

It is an amenable number.

909128067868 is a deficient number, since it is larger than the sum of its proper divisors (681905956404).

909128067868 is a wasteful number, since it uses less digits than its factorization.

909128067868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8557932 (or 8557930 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 64.

It can be divided in two parts, 90912 and 8067868, that added together give a triangular number (8158780 = T₄₀₃₉).

The spelling of 909128067868 in words is "nine hundred nine billion, one hundred twenty-eight million, sixty-seven thousand, eight hundred sixty-eight".