11172836520 has 128 divisors (see below), whose sum is σ = 37493280000. Its totient is φ = 2959384320.

The previous prime is 11172836503. The next prime is 11172836533. The reversal of 11172836520 is 2563827111.

It is a super-3 number, since 3×11172836520³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126205 + ... + 195635.

It is an arithmetic number, because the mean of its divisors is an integer number (292916250).

Almost surely, 2^11172836520 is an apocalyptic number.

11172836520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11172836520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18746640000).

11172836520 is an abundant number, since it is smaller than the sum of its proper divisors (26320443480).

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

11172836520 is a wasteful number, since it uses less digits than its factorization.

11172836520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69600 (or 69590 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 11172836520 in words is "eleven billion, one hundred seventy-two million, eight hundred thirty-six thousand, five hundred twenty".