11805080947 has 12 divisors (see below), whose sum is σ = 13462546104. Its totient is φ = 10265282720.

The previous prime is 11805080941. The next prime is 11805080957. The reversal of 11805080947 is 74908050811.

It is a happy number.

It is not a de Polignac number, because 11805080947 - 2¹⁵ = 11805048179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11805080941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1008538 + ... + 1020175.

It is an arithmetic number, because the mean of its divisors is an integer number (1121878842).

Almost surely, 2^11805080947 is an apocalyptic number.

11805080947 is a deficient number, since it is larger than the sum of its proper divisors (1657465157).

11805080947 is a wasteful number, since it uses less digits than its factorization.

11805080947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028770 (or 2028747 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 11805080947 in words is "eleven billion, eight hundred five million, eighty thousand, nine hundred forty-seven".