71900121263 has 2 divisors, whose sum is σ = 71900121264. Its totient is φ = 71900121262.

The previous prime is 71900121229. The next prime is 71900121331. The reversal of 71900121263 is 36212100917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71900121263 - 2⁶ = 71900121199 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71900121563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35950060631 + 35950060632.

It is an arithmetic number, because the mean of its divisors is an integer number (35950060632).

Almost surely, 2^71900121263 is an apocalyptic number.

71900121263 is a deficient number, since it is larger than the sum of its proper divisors (1).

71900121263 is an equidigital number, since it uses as much as digits as its factorization.

71900121263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 71900121263 in words is "seventy-one billion, nine hundred million, one hundred twenty-one thousand, two hundred sixty-three".