27220389718 has 4 divisors (see below), whose sum is σ = 40830584580. Its totient is φ = 13610194858.

The previous prime is 27220389673. The next prime is 27220389719. The reversal of 27220389718 is 81798302272.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27220389719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6805097428 + ... + 6805097431.

It is an arithmetic number, because the mean of its divisors is an integer number (10207646145).

Almost surely, 2^27220389718 is an apocalyptic number.

27220389718 is a deficient number, since it is larger than the sum of its proper divisors (13610194862).

27220389718 is a wasteful number, since it uses less digits than its factorization.

27220389718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13610194861.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 27220389718 in words is "twenty-seven billion, two hundred twenty million, three hundred eighty-nine thousand, seven hundred eighteen".