71839098901 has 2 divisors, whose sum is σ = 71839098902. Its totient is φ = 71839098900.

The previous prime is 71839098889. The next prime is 71839098923. The reversal of 71839098901 is 10989093817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46451456676 + 25387642225 = 215526^2 + 159335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71839098901 is a prime.

It is a super-2 number, since 2×71839098901² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71839092901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35919549450 + 35919549451.

It is an arithmetic number, because the mean of its divisors is an integer number (35919549451).

Almost surely, 2^71839098901 is an apocalyptic number.

It is an amenable number.

71839098901 is a deficient number, since it is larger than the sum of its proper divisors (1).

71839098901 is an equidigital number, since it uses as much as digits as its factorization.

71839098901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 55.

The spelling of 71839098901 in words is "seventy-one billion, eight hundred thirty-nine million, ninety-eight thousand, nine hundred one".