71683469437 has 2 divisors, whose sum is σ = 71683469438. Its totient is φ = 71683469436.

The previous prime is 71683469387. The next prime is 71683469471. The reversal of 71683469437 is 73496438617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43854223396 + 27829246041 = 209414^2 + 166821^2 .

It is a cyclic number.

It is not a de Polignac number, because 71683469437 - 2³⁵ = 37323731069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71683469537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35841734718 + 35841734719.

It is an arithmetic number, because the mean of its divisors is an integer number (35841734719).

Almost surely, 2^71683469437 is an apocalyptic number.

It is an amenable number.

71683469437 is a deficient number, since it is larger than the sum of its proper divisors (1).

71683469437 is an equidigital number, since it uses as much as digits as its factorization.

71683469437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152, while the sum is 58.

The spelling of 71683469437 in words is "seventy-one billion, six hundred eighty-three million, four hundred sixty-nine thousand, four hundred thirty-seven".