27229997808 has 120 divisors (see below), whose sum is σ = 84070087920. Its totient is φ = 8174085120.

The previous prime is 27229997803. The next prime is 27229997831. The reversal of 27229997808 is 80879992272.

27229997808 is a `hidden beast` number, since 272 + 299 + 9 + 78 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27229997803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100638 + ... + 254141.

It is an arithmetic number, because the mean of its divisors is an integer number (700584066).

Almost surely, 2^27229997808 is an apocalyptic number.

It is an amenable number.

27229997808 is an abundant number, since it is smaller than the sum of its proper divisors (56840090112).

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

27229997808 is a wasteful number, since it uses less digits than its factorization.

27229997808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354847 (or 354838 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 27229997808 in words is "twenty-seven billion, two hundred twenty-nine million, nine hundred ninety-seven thousand, eight hundred eight".