43222251520 has 384 divisors, whose sum is σ = 124886361600. Its totient is φ = 14046068736.

The previous prime is 43222251509. The next prime is 43222251547. The reversal of 43222251520 is 2515222234.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114042691 + ... + 114043069.

It is an arithmetic number, because the mean of its divisors is an integer number (325224900).

Almost surely, 2^43222251520 is an apocalyptic number.

43222251520 is a gapful number since it is divisible by the number (40) 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 43222251520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62443180800).

43222251520 is an abundant number, since it is smaller than the sum of its proper divisors (81664110080).

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

43222251520 is a wasteful number, since it uses less digits than its factorization.

43222251520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 43222251520 its reverse (2515222234), we get a palindrome (45737473754).

The spelling of 43222251520 in words is "forty-three billion, two hundred twenty-two million, two hundred fifty-one thousand, five hundred twenty".