27057642947 has 2 divisors, whose sum is σ = 27057642948. Its totient is φ = 27057642946.

The previous prime is 27057642943. The next prime is 27057642967. The reversal of 27057642947 is 74924675072.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27057642947 - 2² = 27057642943 is a prime.

It is not a weakly prime, because it can be changed into another prime (27057642943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13528821473 + 13528821474.

It is an arithmetic number, because the mean of its divisors is an integer number (13528821474).

Almost surely, 2^27057642947 is an apocalyptic number.

27057642947 is a deficient number, since it is larger than the sum of its proper divisors (1).

27057642947 is an equidigital number, since it uses as much as digits as its factorization.

27057642947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 27057642947 in words is "twenty-seven billion, fifty-seven million, six hundred forty-two thousand, nine hundred forty-seven".