22155004152 has 96 divisors (see below), whose sum is σ = 62493331680. Its totient is φ = 7084143360.

The previous prime is 22155004117. The next prime is 22155004153. The reversal of 22155004152 is 25140055122.

22155004152 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 500 + 4 + 152 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155004153) 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, 130578 + ... + 247710.

It is an arithmetic number, because the mean of its divisors is an integer number (650972205).

Almost surely, 2^22155004152 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 22155004152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31246665840).

22155004152 is an abundant number, since it is smaller than the sum of its proper divisors (40338327528).

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

22155004152 is a wasteful number, since it uses less digits than its factorization.

22155004152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117253 (or 117246 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 22155004152 its reverse (25140055122), we get a palindrome (47295059274).

The spelling of 22155004152 in words is "twenty-two billion, one hundred fifty-five million, four thousand, one hundred fifty-two".