11280807172 has 12 divisors (see below), whose sum is σ = 19780978000. Its totient is φ = 5629099176.

The previous prime is 11280807169. The next prime is 11280807173. The reversal of 11280807172 is 27170808211.

It is a super-2 number, since 2×11280807172² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11280807173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2823858 + ... + 2827849.

Almost surely, 2^11280807172 is an apocalyptic number.

It is an amenable number.

11280807172 is a deficient number, since it is larger than the sum of its proper divisors (8500170828).

11280807172 is a wasteful number, since it uses less digits than its factorization.

11280807172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652210 (or 5652208 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 37.

The spelling of 11280807172 in words is "eleven billion, two hundred eighty million, eight hundred seven thousand, one hundred seventy-two".