8111745252 has 72 divisors (see below), whose sum is σ = 22123040576. Its totient is φ = 2491280064.

The previous prime is 8111745251. The next prime is 8111745263. The reversal of 8111745252 is 2525471118.

It is a happy number.

It is a super-2 number, since 2×8111745252² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (8111745251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240153 + ... + 271839.

Almost surely, 2^8111745252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8111745252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11061520288).

8111745252 is an abundant number, since it is smaller than the sum of its proper divisors (14011295324).

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

8111745252 is a wasteful number, since it uses less digits than its factorization.

8111745252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32257 (or 32252 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 8111745252 is about 90065.2277629941. The cubic root of 8111745252 is about 2009.2690800475.

The spelling of 8111745252 in words is "eight billion, one hundred eleven million, seven hundred forty-five thousand, two hundred fifty-two".