11472805845 has 16 divisors (see below), whose sum is σ = 20396099520. Its totient is φ = 6118829712.

The previous prime is 11472805831. The next prime is 11472805847. The reversal of 11472805845 is 54850827411.

11472805845 is a `hidden beast` number, since 1 + 1 + 47 + 28 + 0 + 584 + 5 = 666.

It is not a de Polignac number, because 11472805845 - 2²¹ = 11470708693 is a prime.

It is a super-3 number, since 3×11472805845³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11472805845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11472805847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42491739 + ... + 42492008.

It is an arithmetic number, because the mean of its divisors is an integer number (1274756220).

Almost surely, 2^11472805845 is an apocalyptic number.

11472805845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11472805845 is a deficient number, since it is larger than the sum of its proper divisors (8923293675).

11472805845 is an equidigital number, since it uses as much as digits as its factorization.

11472805845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84983761 (or 84983755 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The spelling of 11472805845 in words is "eleven billion, four hundred seventy-two million, eight hundred five thousand, eight hundred forty-five".