22431502534440 has 128 divisors (see below), whose sum is σ = 68115597701760. Its totient is φ = 5908770054144.

The previous prime is 22431502534439. The next prime is 22431502534451. The reversal of 22431502534440 is 4443520513422.

It is a super-2 number, since 2×22431502534440² (a number of 28 digits) contains 22 as substring.

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, 66933372 + ... + 67267668.

It is an arithmetic number, because the mean of its divisors is an integer number (532153107045).

Almost surely, 2^{22431502534440} is an apocalyptic number.

22431502534440 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 22431502534440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34057798850880).

22431502534440 is an abundant number, since it is smaller than the sum of its proper divisors (45684095167320).

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

22431502534440 is a wasteful number, since it uses less digits than its factorization.

22431502534440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341131 (or 341127 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 39.

The spelling of 22431502534440 in words is "twenty-two trillion, four hundred thirty-one billion, five hundred two million, five hundred thirty-four thousand, four hundred forty".