27807780023 has 2 divisors, whose sum is σ = 27807780024. Its totient is φ = 27807780022.

The previous prime is 27807780019. The next prime is 27807780079. The reversal of 27807780023 is 32008770872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27807780023 - 2² = 27807780019 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27807780083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13903890011 + 13903890012.

It is an arithmetic number, because the mean of its divisors is an integer number (13903890012).

Almost surely, 2^27807780023 is an apocalyptic number.

27807780023 is a deficient number, since it is larger than the sum of its proper divisors (1).

27807780023 is an equidigital number, since it uses as much as digits as its factorization.

27807780023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 263424, while the sum is 44.

The spelling of 27807780023 in words is "twenty-seven billion, eight hundred seven million, seven hundred eighty thousand, twenty-three".