71883674981 has 2 divisors, whose sum is σ = 71883674982. Its totient is φ = 71883674980.

The previous prime is 71883674927. The next prime is 71883675053. The reversal of 71883674981 is 18947638817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66891545956 + 4992129025 = 258634^2 + 70655^2 .

It is a cyclic number.

It is not a de Polignac number, because 71883674981 - 2⁶ = 71883674917 is a prime.

It is a super-2 number, since 2×71883674981² (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 (71883674911) 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, 35941837490 + 35941837491.

It is an arithmetic number, because the mean of its divisors is an integer number (35941837491).

Almost surely, 2^71883674981 is an apocalyptic number.

It is an amenable number.

71883674981 is a deficient number, since it is larger than the sum of its proper divisors (1).

71883674981 is an equidigital number, since it uses as much as digits as its factorization.

71883674981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16257024, while the sum is 62.

The spelling of 71883674981 in words is "seventy-one billion, eight hundred eighty-three million, six hundred seventy-four thousand, nine hundred eighty-one".