26877861971 has 2 divisors, whose sum is σ = 26877861972. Its totient is φ = 26877861970.

The previous prime is 26877861949. The next prime is 26877861991. The reversal of 26877861971 is 17916877862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26877861971 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (26877861911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13438930985 + 13438930986.

It is an arithmetic number, because the mean of its divisors is an integer number (13438930986).

Almost surely, 2^26877861971 is an apocalyptic number.

26877861971 is a deficient number, since it is larger than the sum of its proper divisors (1).

26877861971 is an equidigital number, since it uses as much as digits as its factorization.

26877861971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 62.

The spelling of 26877861971 in words is "twenty-six billion, eight hundred seventy-seven million, eight hundred sixty-one thousand, nine hundred seventy-one".