27530029979 has 2 divisors, whose sum is σ = 27530029980. Its totient is φ = 27530029978.

The previous prime is 27530029951. The next prime is 27530030009. The reversal of 27530029979 is 97992003572.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27530029979 - 2¹² = 27530025883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27530029979.

It is not a weakly prime, because it can be changed into another prime (27530029909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13765014989 + 13765014990.

It is an arithmetic number, because the mean of its divisors is an integer number (13765014990).

Almost surely, 2^27530029979 is an apocalyptic number.

27530029979 is a deficient number, since it is larger than the sum of its proper divisors (1).

27530029979 is an equidigital number, since it uses as much as digits as its factorization.

27530029979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The spelling of 27530029979 in words is "twenty-seven billion, five hundred thirty million, twenty-nine thousand, nine hundred seventy-nine".