908423772985 has 4 divisors (see below), whose sum is σ = 1090108527588. Its totient is φ = 726739018384.

The previous prime is 908423772961. The next prime is 908423773007. The reversal of 908423772985 is 589277324809.

It is a happy number.

908423772985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 689716962064 + 218706810921 = 830492^2 + 467661^2 .

It is a cyclic number.

It is not a de Polignac number, because 908423772985 - 2¹⁹ = 908423248697 is a prime.

It is a Duffinian number.

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, 90842377294 + ... + 90842377303.

It is an arithmetic number, because the mean of its divisors is an integer number (272527131897).

Almost surely, 2^908423772985 is an apocalyptic number.

It is an amenable number.

908423772985 is a deficient number, since it is larger than the sum of its proper divisors (181684754603).

908423772985 is a wasteful number, since it uses less digits than its factorization.

908423772985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181684754602.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 908423772985 in words is "nine hundred eight billion, four hundred twenty-three million, seven hundred seventy-two thousand, nine hundred eighty-five".