71422017449 has 2 divisors, whose sum is σ = 71422017450. Its totient is φ = 71422017448.

The previous prime is 71422017421. The next prime is 71422017521. The reversal of 71422017449 is 94471022417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52117693849 + 19304323600 = 228293^2 + 138940^2 .

It is a cyclic number.

It is not a de Polignac number, because 71422017449 - 2¹² = 71422013353 is a prime.

It is a super-2 number, since 2×71422017449² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71422017649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35711008724 + 35711008725.

It is an arithmetic number, because the mean of its divisors is an integer number (35711008725).

Almost surely, 2^71422017449 is an apocalyptic number.

It is an amenable number.

71422017449 is a deficient number, since it is larger than the sum of its proper divisors (1).

71422017449 is an equidigital number, since it uses as much as digits as its factorization.

71422017449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 71422017449 in words is "seventy-one billion, four hundred twenty-two million, seventeen thousand, four hundred forty-nine".