11900319845 has 8 divisors (see below), whose sum is σ = 14406759576. Its totient is φ = 9436005376.

The previous prime is 11900319839. The next prime is 11900319857. The reversal of 11900319845 is 54891300911.

It can be written as a sum of positive squares in 4 ways, for example, as 1505905636 + 10394414209 = 38806^2 + 101953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11900319845 - 2¹⁴ = 11900303461 is a prime.

It is a super-2 number, since 2×11900319845² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10530692 + ... + 10531821.

It is an arithmetic number, because the mean of its divisors is an integer number (1800844947).

Almost surely, 2^11900319845 is an apocalyptic number.

It is an amenable number.

11900319845 is a deficient number, since it is larger than the sum of its proper divisors (2506439731).

11900319845 is a wasteful number, since it uses less digits than its factorization.

11900319845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21062631.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 11900319845 in words is "eleven billion, nine hundred million, three hundred nineteen thousand, eight hundred forty-five".