27731147063 has 4 divisors (see below), whose sum is σ = 27732030840. Its totient is φ = 27730263288.

The previous prime is 27731147047. The next prime is 27731147107. The reversal of 27731147063 is 36074113772.

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 27731147063 - 2⁴ = 27731147047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27731147063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27736147063) 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, 393020 + ... + 458177.

It is an arithmetic number, because the mean of its divisors is an integer number (6933007710).

Almost surely, 2^27731147063 is an apocalyptic number.

27731147063 is a deficient number, since it is larger than the sum of its proper divisors (883777).

27731147063 is an equidigital number, since it uses as much as digits as its factorization.

27731147063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883776.

The product of its (nonzero) digits is 148176, while the sum is 41.

The spelling of 27731147063 in words is "twenty-seven billion, seven hundred thirty-one million, one hundred forty-seven thousand, sixty-three".