27222545440 has 48 divisors (see below), whose sum is σ = 64335562200. Its totient is φ = 10885242880.

The previous prime is 27222545423. The next prime is 27222545461. The reversal of 27222545440 is 4454522272.

It can be written as a sum of positive squares in 4 ways, for example, as 25241583376 + 1980962064 = 158876^2 + 44508^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27222545440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458586 + ... + 514534.

Almost surely, 2^27222545440 is an apocalyptic number.

27222545440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27222545440 is an abundant number, since it is smaller than the sum of its proper divisors (37113016760).

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

27222545440 is a wasteful number, since it uses less digits than its factorization.

27222545440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59005 (or 58997 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 37.

The spelling of 27222545440 in words is "twenty-seven billion, two hundred twenty-two million, five hundred forty-five thousand, four hundred forty".