26871870929 has 2 divisors, whose sum is σ = 26871870930. Its totient is φ = 26871870928.

The previous prime is 26871870869. The next prime is 26871870959. The reversal of 26871870929 is 92907817862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23661515329 + 3210355600 = 153823^2 + 56660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26871870929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26871870959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13435935464 + 13435935465.

It is an arithmetic number, because the mean of its divisors is an integer number (13435935465).

Almost surely, 2^26871870929 is an apocalyptic number.

It is an amenable number.

26871870929 is a deficient number, since it is larger than the sum of its proper divisors (1).

26871870929 is an equidigital number, since it uses as much as digits as its factorization.

26871870929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The spelling of 26871870929 in words is "twenty-six billion, eight hundred seventy-one million, eight hundred seventy thousand, nine hundred twenty-nine".