27219390290 has 8 divisors (see below), whose sum is σ = 48994902540. Its totient is φ = 10887756112.

The previous prime is 27219390271. The next prime is 27219390337. The reversal of 27219390290 is 9209391272.

It is a Cunningham number, because it is equal to 164983²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 27219390289 + 1 = 164983^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1360969505 + ... + 1360969524.

Almost surely, 2^27219390290 is an apocalyptic number.

27219390290 is a deficient number, since it is larger than the sum of its proper divisors (21775512250).

27219390290 is a wasteful number, since it uses less digits than its factorization.

27219390290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721939036.

The product of its (nonzero) digits is 122472, while the sum is 44.

The spelling of 27219390290 in words is "twenty-seven billion, two hundred nineteen million, three hundred ninety thousand, two hundred ninety".