71842338497 has 2 divisors, whose sum is σ = 71842338498. Its totient is φ = 71842338496.

The previous prime is 71842338409. The next prime is 71842338499. The reversal of 71842338497 is 79483324817.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69852375616 + 1989962881 = 264296^2 + 44609^2 .

It is a cyclic number.

It is not a de Polignac number, because 71842338497 - 2¹² = 71842334401 is a prime.

It is a super-2 number, since 2×71842338497² (a number of 23 digits) contains 22 as substring.

Together with 71842338499, 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 (71842338499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35921169248 + 35921169249.

It is an arithmetic number, because the mean of its divisors is an integer number (35921169249).

Almost surely, 2^71842338497 is an apocalyptic number.

It is an amenable number.

71842338497 is a deficient number, since it is larger than the sum of its proper divisors (1).

71842338497 is an equidigital number, since it uses as much as digits as its factorization.

71842338497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 56.

The spelling of 71842338497 in words is "seventy-one billion, eight hundred forty-two million, three hundred thirty-eight thousand, four hundred ninety-seven".