900723743009 has 4 divisors (see below), whose sum is σ = 900737379204. Its totient is φ = 900710106816.

The previous prime is 900723742981. The next prime is 900723743011. The reversal of 900723743009 is 900347327009.

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 488457016609 + 412266726400 = 698897^2 + 642080^2 .

It is a cyclic number.

It is not a de Polignac number, because 900723743009 - 2²⁸ = 900455307553 is a prime.

It is a super-2 number, since 2×900723743009² (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 (900723743069) by changing a digit.

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, 6718532 + ... + 6851285.

It is an arithmetic number, because the mean of its divisors is an integer number (225184344801).

Almost surely, 2^900723743009 is an apocalyptic number.

It is an amenable number.

900723743009 is a deficient number, since it is larger than the sum of its proper divisors (13636195).

900723743009 is a wasteful number, since it uses less digits than its factorization.

900723743009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636194.

The product of its (nonzero) digits is 285768, while the sum is 44.

The spelling of 900723743009 in words is "nine hundred billion, seven hundred twenty-three million, seven hundred forty-three thousand, nine".