71358083977 has 2 divisors, whose sum is σ = 71358083978. Its totient is φ = 71358083976.

The previous prime is 71358083963. The next prime is 71358084019. The reversal of 71358083977 is 77938085317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37080894096 + 34277189881 = 192564^2 + 185141^2 .

It is a cyclic number.

It is not a de Polignac number, because 71358083977 - 2²³ = 71349695369 is a prime.

It is a super-2 number, since 2×71358083977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71358023977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35679041988 + 35679041989.

It is an arithmetic number, because the mean of its divisors is an integer number (35679041989).

Almost surely, 2^71358083977 is an apocalyptic number.

It is an amenable number.

71358083977 is a deficient number, since it is larger than the sum of its proper divisors (1).

71358083977 is an equidigital number, since it uses as much as digits as its factorization.

71358083977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 71358083977 in words is "seventy-one billion, three hundred fifty-eight million, eighty-three thousand, nine hundred seventy-seven".