71831661273623 has 2 divisors, whose sum is σ = 71831661273624. Its totient is φ = 71831661273622.

The previous prime is 71831661273601. The next prime is 71831661273629. The reversal of 71831661273623 is 32637216613817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71831661273623 - 2¹⁰ = 71831661272599 is a prime.

It is a super-2 number, since 2×71831661273623² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71831661273629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35915830636811 + 35915830636812.

It is an arithmetic number, because the mean of its divisors is an integer number (35915830636812).

Almost surely, 2^{71831661273623} is an apocalyptic number.

71831661273623 is a deficient number, since it is larger than the sum of its proper divisors (1).

71831661273623 is an equidigital number, since it uses as much as digits as its factorization.

71831661273623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 56.

The spelling of 71831661273623 in words is "seventy-one trillion, eight hundred thirty-one billion, six hundred sixty-one million, two hundred seventy-three thousand, six hundred twenty-three".