27211343638 has 8 divisors (see below), whose sum is σ = 40832849880. Its totient is φ = 13600393680.

The previous prime is 27211343633. The next prime is 27211343681. The reversal of 27211343638 is 83634311272.

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

It is a self number, because there is not a number n which added to its sum of digits gives 27211343638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27211343633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2632623 + ... + 2642938.

It is an arithmetic number, because the mean of its divisors is an integer number (5104106235).

Almost surely, 2^27211343638 is an apocalyptic number.

27211343638 is a deficient number, since it is larger than the sum of its proper divisors (13621506242).

27211343638 is a wasteful number, since it uses less digits than its factorization.

27211343638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278142.

The product of its digits is 145152, while the sum is 40.

The spelling of 27211343638 in words is "twenty-seven billion, two hundred eleven million, three hundred forty-three thousand, six hundred thirty-eight".