27391201212 has 24 divisors (see below), whose sum is σ = 64545605712. Its totient is φ = 9040000000.

The previous prime is 27391201207. The next prime is 27391201241. The reversal of 27391201212 is 21210219372.

It is a self number, because there is not a number n which added to its sum of digits gives 27391201212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11298789 + ... + 11301212.

It is an arithmetic number, because the mean of its divisors is an integer number (2689400238).

Almost surely, 2^27391201212 is an apocalyptic number.

It is an amenable number.

27391201212 is an abundant number, since it is smaller than the sum of its proper divisors (37154404500).

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

27391201212 is a wasteful number, since it uses less digits than its factorization.

27391201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22600109 (or 22600107 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The spelling of 27391201212 in words is "twenty-seven billion, three hundred ninety-one million, two hundred one thousand, two hundred twelve".