27751740767 has 4 divisors (see below), whose sum is σ = 27762947016. Its totient is φ = 27740534520.

The previous prime is 27751740659. The next prime is 27751740769. The reversal of 27751740767 is 76704715772.

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 27751740767 - 2²⁴ = 27734963551 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 (27751740769) 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, 5599409 + ... + 5604362.

It is an arithmetic number, because the mean of its divisors is an integer number (6940736754).

Almost surely, 2^27751740767 is an apocalyptic number.

27751740767 is a deficient number, since it is larger than the sum of its proper divisors (11206249).

27751740767 is a wasteful number, since it uses less digits than its factorization.

27751740767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11206248.

The product of its (nonzero) digits is 4033680, while the sum is 53.

The spelling of 27751740767 in words is "twenty-seven billion, seven hundred fifty-one million, seven hundred forty thousand, seven hundred sixty-seven".