135223224552 has 128 divisors (see below), whose sum is σ = 408094646400. Its totient is φ = 41238844416.

The previous prime is 135223224551. The next prime is 135223224583. The reversal of 135223224552 is 255422322531.

It is a happy number.

135223224552 is a `hidden beast` number, since 1 + 3 + 52 + 2 + 32 + 24 + 552 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 (135223224551) 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, 104223 + ... + 530385.

It is an arithmetic number, because the mean of its divisors is an integer number (3188239425).

Almost surely, 2^135223224552 is an apocalyptic number.

135223224552 is a gapful number since it is divisible by the number (12) 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 135223224552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204047323200).

135223224552 is an abundant number, since it is smaller than the sum of its proper divisors (272871421848).

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

135223224552 is a wasteful number, since it uses less digits than its factorization.

135223224552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426304 (or 426294 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The spelling of 135223224552 in words is "one hundred thirty-five billion, two hundred twenty-three million, two hundred twenty-four thousand, five hundred fifty-two".