71884055057 has 2 divisors, whose sum is σ = 71884055058. Its totient is φ = 71884055056.

The previous prime is 71884055053. The next prime is 71884055081. The reversal of 71884055057 is 75055048817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61440032641 + 10444022416 = 247871^2 + 102196^2 .

It is a cyclic number.

It is not a de Polignac number, because 71884055057 - 2² = 71884055053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71884054996 and 71884055014.

It is not a weakly prime, because it can be changed into another prime (71884055053) 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, 35942027528 + 35942027529.

It is an arithmetic number, because the mean of its divisors is an integer number (35942027529).

Almost surely, 2^71884055057 is an apocalyptic number.

It is an amenable number.

71884055057 is a deficient number, since it is larger than the sum of its proper divisors (1).

71884055057 is an equidigital number, since it uses as much as digits as its factorization.

71884055057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568000, while the sum is 50.

The spelling of 71884055057 in words is "seventy-one billion, eight hundred eighty-four million, fifty-five thousand, fifty-seven".