27775563051 has 4 divisors (see below), whose sum is σ = 37034084072. Its totient is φ = 18517042032.

The previous prime is 27775563047. The next prime is 27775563089. The reversal of 27775563051 is 15036557772.

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

It is not a de Polignac number, because 27775563051 - 2² = 27775563047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27775563451) 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, 4629260506 + ... + 4629260511.

It is an arithmetic number, because the mean of its divisors is an integer number (9258521018).

Almost surely, 2^27775563051 is an apocalyptic number.

27775563051 is a deficient number, since it is larger than the sum of its proper divisors (9258521021).

27775563051 is an equidigital number, since it uses as much as digits as its factorization.

27775563051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9258521020.

The product of its (nonzero) digits is 1543500, while the sum is 48.

The spelling of 27775563051 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred sixty-three thousand, fifty-one".