22147540408 has 64 divisors (see below), whose sum is σ = 48502333440. Its totient is φ = 9283421184.

The previous prime is 22147540369. The next prime is 22147540421. The reversal of 22147540408 is 80404574122.

It is a super-2 number, since 2×22147540408² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6991641 + ... + 6994807.

It is an arithmetic number, because the mean of its divisors is an integer number (757848960).

Almost surely, 2^22147540408 is an apocalyptic number.

22147540408 is a gapful number since it is divisible by the number (28) 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 22147540408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24251166720).

22147540408 is an abundant number, since it is smaller than the sum of its proper divisors (26354793032).

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

22147540408 is a wasteful number, since it uses less digits than its factorization.

22147540408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884 (or 5880 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 37.

The spelling of 22147540408 in words is "twenty-two billion, one hundred forty-seven million, five hundred forty thousand, four hundred eight".