22511040000 has 400 divisors, whose sum is σ = 75933443520. Its totient is φ = 5923840000.

The previous prime is 22511039939. The next prime is 22511040017. The reversal of 22511040000 is 4011522.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 125759911 + ... + 125760089.

Almost surely, 2^22511040000 is an apocalyptic number.

22511040000 is a gapful number since it is divisible by the number (20) 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 22511040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37966721760).

22511040000 is an abundant number, since it is smaller than the sum of its proper divisors (53422403520).

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

22511040000 is an equidigital number, since it uses as much as digits as its factorization.

22511040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 22511040000 its reverse (4011522), we get a palindrome (22515051522).

The spelling of 22511040000 in words is "twenty-two billion, five hundred eleven million, forty thousand".