27797947007 has 4 divisors (see below), whose sum is σ = 28389392736. Its totient is φ = 27206501280.

The previous prime is 27797946961. The next prime is 27797947027. The reversal of 27797947007 is 70074979772.

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 27797947007 - 2²² = 27793752703 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 (27797947027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295722794 + ... + 295722887.

It is an arithmetic number, because the mean of its divisors is an integer number (7097348184).

Almost surely, 2^27797947007 is an apocalyptic number.

27797947007 is a deficient number, since it is larger than the sum of its proper divisors (591445729).

27797947007 is an equidigital number, since it uses as much as digits as its factorization.

27797947007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591445728.

The product of its (nonzero) digits is 10890936, while the sum is 59.

The spelling of 27797947007 in words is "twenty-seven billion, seven hundred ninety-seven million, nine hundred forty-seven thousand, seven".