27277700491 has 4 divisors (see below), whose sum is σ = 27278505184. Its totient is φ = 27276895800.

The previous prime is 27277700441. The next prime is 27277700507. The reversal of 27277700491 is 19400777272.

It is a happy number.

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 27277700491 - 2⁷ = 27277700363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27277700431) 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, 349155 + ... + 420076.

It is an arithmetic number, because the mean of its divisors is an integer number (6819626296).

Almost surely, 2^27277700491 is an apocalyptic number.

27277700491 is a deficient number, since it is larger than the sum of its proper divisors (804693).

27277700491 is an equidigital number, since it uses as much as digits as its factorization.

27277700491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804692.

The product of its (nonzero) digits is 345744, while the sum is 46.

The spelling of 27277700491 in words is "twenty-seven billion, two hundred seventy-seven million, seven hundred thousand, four hundred ninety-one".