22040040040 has 32 divisors (see below), whose sum is σ = 49651461000. Its totient is φ = 8805105664.

The previous prime is 22040039999. The next prime is 22040040091. The reversal of 22040040040 is 4004004022.

It can be written as a sum of positive squares in 4 ways, for example, as 14478346276 + 7561693764 = 120326^2 + 86958^2 .

22040040040 is a modest number, since divided by 40040 gives 22040 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22040039996 and 22040040023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308185 + ... + 372904.

Almost surely, 2^22040040040 is an apocalyptic number.

22040040040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22040040040 is an abundant number, since it is smaller than the sum of its proper divisors (27611420960).

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

22040040040 is a wasteful number, since it uses less digits than its factorization.

22040040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681909 (or 681905 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 22040040040 its reverse (4004004022), we get a palindrome (26044044062).

The spelling of 22040040040 in words is "twenty-two billion, forty million, forty thousand, forty".