22415005540 has 12 divisors (see below), whose sum is σ = 47071511676. Its totient is φ = 8966002208.

The previous prime is 22415005499. The next prime is 22415005609. The reversal of 22415005540 is 4550051422.

It can be written as a sum of positive squares in 2 ways, for example, as 4571923456 + 17843082084 = 67616^2 + 133578^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22415005499 and 22415005508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560375119 + ... + 560375158.

It is an arithmetic number, because the mean of its divisors is an integer number (3922625973).

Almost surely, 2^22415005540 is an apocalyptic number.

22415005540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22415005540 is an abundant number, since it is smaller than the sum of its proper divisors (24656506136).

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

22415005540 is a wasteful number, since it uses less digits than its factorization.

22415005540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120750286 (or 1120750284 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 22415005540 its reverse (4550051422), we get a palindrome (26965056962).

The spelling of 22415005540 in words is "twenty-two billion, four hundred fifteen million, five thousand, five hundred forty".