905991770896 has 15 divisors (see below), whose sum is σ = 1755366432871. Its totient is φ = 452993981776.

The previous prime is 905991770837. The next prime is 905991770951. The reversal of 905991770896 is 698077199509.

The square root of 905991770896 is 951836.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3688365 + ... + 3926323.

Almost surely, 2^905991770896 is an apocalyptic number.

905991770896 is the 951836-th square number.

It is an amenable number.

905991770896 is a deficient number, since it is larger than the sum of its proper divisors (849374661975).

905991770896 is an frugal number, since it uses more digits than its factorization.

905991770896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475926 (or 237961 counting only the distinct ones).

The product of its (nonzero) digits is 77157360, while the sum is 70.

The spelling of 905991770896 in words is "nine hundred five billion, nine hundred ninety-one million, seven hundred seventy thousand, eight hundred ninety-six".