11172016020 has 96 divisors (see below), whose sum is σ = 34463511936. Its totient is φ = 2681536000.

The previous prime is 11172016019. The next prime is 11172016027. The reversal of 11172016020 is 2061027111.

It is a happy number.

It is a super-3 number, since 3×11172016020³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172016027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17139 + ... + 150458.

It is an arithmetic number, because the mean of its divisors is an integer number (358994916).

Almost surely, 2^11172016020 is an apocalyptic number.

11172016020 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 11172016020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17231755968).

11172016020 is an abundant number, since it is smaller than the sum of its proper divisors (23291495916).

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

11172016020 is a wasteful number, since it uses less digits than its factorization.

11172016020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167721 (or 167719 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

The spelling of 11172016020 in words is "eleven billion, one hundred seventy-two million, sixteen thousand, twenty".