905251027969 has 4 divisors (see below), whose sum is σ = 911858699844. Its totient is φ = 898643356096.

The previous prime is 905251027931. The next prime is 905251027979. The reversal of 905251027969 is 969720152509.

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 477094118400 + 428156909569 = 690720^2 + 654337^2 .

It is a cyclic number.

It is not a de Polignac number, because 905251027969 - 2²³ = 905242639361 is a prime.

It is a super-2 number, since 2×905251027969² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (905251027979) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3303835732 + ... + 3303836005.

It is an arithmetic number, because the mean of its divisors is an integer number (227964674961).

Almost surely, 2^905251027969 is an apocalyptic number.

It is an amenable number.

905251027969 is a deficient number, since it is larger than the sum of its proper divisors (6607671875).

905251027969 is a wasteful number, since it uses less digits than its factorization.

905251027969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6607671874.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The spelling of 905251027969 in words is "nine hundred five billion, two hundred fifty-one million, twenty-seven thousand, nine hundred sixty-nine".