22511364612 has 96 divisors (see below), whose sum is σ = 59273109504. Its totient is φ = 6587846400.

The previous prime is 22511364611. The next prime is 22511364649. The reversal of 22511364612 is 21646311522.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (22511364611) 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, 2052808 + ... + 2063744.

It is an arithmetic number, because the mean of its divisors is an integer number (617428224).

Almost surely, 2^22511364612 is an apocalyptic number.

22511364612 is a gapful number since it is divisible by the number (22) 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 22511364612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29636554752).

22511364612 is an abundant number, since it is smaller than the sum of its proper divisors (36761744892).

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

22511364612 is a wasteful number, since it uses less digits than its factorization.

22511364612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11489 (or 11487 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The spelling of 22511364612 in words is "twenty-two billion, five hundred eleven million, three hundred sixty-four thousand, six hundred twelve".