127263862091 has 2 divisors, whose sum is σ = 127263862092. Its totient is φ = 127263862090.

The previous prime is 127263862087. The next prime is 127263862093. The reversal of 127263862091 is 190268362721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127263862091 - 2² = 127263862087 is a prime.

It is a Sophie Germain prime.

Together with 127263862093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127263862093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63631931045 + 63631931046.

It is an arithmetic number, because the mean of its divisors is an integer number (63631931046).

Almost surely, 2^127263862091 is an apocalyptic number.

127263862091 is a deficient number, since it is larger than the sum of its proper divisors (1).

127263862091 is an equidigital number, since it uses as much as digits as its factorization.

127263862091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 127263862091 in words is "one hundred twenty-seven billion, two hundred sixty-three million, eight hundred sixty-two thousand, ninety-one".