22129554090436 has 243 divisors, whose sum is σ = 46261824721749. Its totient is φ = 9256070992896.

The previous prime is 22129554090403. The next prime is 22129554090473. The reversal of 22129554090436 is 63409045592122.

It is a happy number.

The square root of 22129554090436 is 4704206.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 12625898250436 + 9503655840000 = 3553294^2 + 3082800^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 60298512325 + ... + 60298512691.

Almost surely, 2^{22129554090436} is an apocalyptic number.

22129554090436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22129554090436 is the 4704206-th square number.

It is an amenable number.

22129554090436 is an abundant number, since it is smaller than the sum of its proper divisors (24132270631313).

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

22129554090436 is a wasteful number, since it uses less digits than its factorization.

22129554090436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 22129554090436 in words is "twenty-two trillion, one hundred twenty-nine billion, five hundred fifty-four million, ninety thousand, four hundred thirty-six".