11445530172 has 24 divisors (see below), whose sum is σ = 26711696592. Its totient is φ = 3814396800.

The previous prime is 11445530167. The next prime is 11445530179. The reversal of 11445530172 is 27103554411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11445530179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34729 + ... + 155232.

It is an arithmetic number, because the mean of its divisors is an integer number (1112987358).

Almost surely, 2^11445530172 is an apocalyptic number.

11445530172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11445530172 is an abundant number, since it is smaller than the sum of its proper divisors (15266166420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11445530172 is a wasteful number, since it uses less digits than its factorization.

11445530172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194989 (or 194987 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 11445530172 in words is "eleven billion, four hundred forty-five million, five hundred thirty thousand, one hundred seventy-two".