27729777499 has 2 divisors, whose sum is σ = 27729777500. Its totient is φ = 27729777498.

The previous prime is 27729777479. The next prime is 27729777541. The reversal of 27729777499 is 99477792772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27729777499 - 2⁷ = 27729777371 is a prime.

It is not a weakly prime, because it can be changed into another prime (27729777469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13864888749 + 13864888750.

It is an arithmetic number, because the mean of its divisors is an integer number (13864888750).

Almost surely, 2^27729777499 is an apocalyptic number.

27729777499 is a deficient number, since it is larger than the sum of its proper divisors (1).

27729777499 is an equidigital number, since it uses as much as digits as its factorization.

27729777499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196036848, while the sum is 70.

The spelling of 27729777499 in words is "twenty-seven billion, seven hundred twenty-nine million, seven hundred seventy-seven thousand, four hundred ninety-nine".