27481407291967 has 4 divisors (see below), whose sum is σ = 27486089766280. Its totient is φ = 27476724817656.

The previous prime is 27481407291959. The next prime is 27481407291983. The reversal of 27481407291967 is 76919270418472.

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

It is a cyclic number.

It is not a de Polignac number, because 27481407291967 - 2³ = 27481407291959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27481407291907) 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, 2341228353 + ... + 2341240090.

It is an arithmetic number, because the mean of its divisors is an integer number (6871522441570).

Almost surely, 2^{27481407291967} is an apocalyptic number.

27481407291967 is a deficient number, since it is larger than the sum of its proper divisors (4682474313).

27481407291967 is an equidigital number, since it uses as much as digits as its factorization.

27481407291967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682474312.

The product of its (nonzero) digits is 85349376, while the sum is 67.

The spelling of 27481407291967 in words is "twenty-seven trillion, four hundred eighty-one billion, four hundred seven million, two hundred ninety-one thousand, nine hundred sixty-seven".