27855862196401 has 4 divisors (see below), whose sum is σ = 28191474994032. Its totient is φ = 27520249398772.

The previous prime is 27855862196399. The next prime is 27855862196443. The reversal of 27855862196401 is 10469126855872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27855862196401 - 2¹ = 27855862196399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27855862196471) 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, 167806398691 + ... + 167806398856.

It is an arithmetic number, because the mean of its divisors is an integer number (7047868748508).

Almost surely, 2^{27855862196401} is an apocalyptic number.

It is an amenable number.

27855862196401 is a deficient number, since it is larger than the sum of its proper divisors (335612797631).

27855862196401 is an equidigital number, since it uses as much as digits as its factorization.

27855862196401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335612797630.

The product of its (nonzero) digits is 58060800, while the sum is 64.

The spelling of 27855862196401 in words is "twenty-seven trillion, eight hundred fifty-five billion, eight hundred sixty-two million, one hundred ninety-six thousand, four hundred one".