71450427050417 has 4 divisors (see below), whose sum is σ = 71450455704180. Its totient is φ = 71450398396656.

The previous prime is 71450427050381. The next prime is 71450427050441. The reversal of 71450427050417 is 71405072405417.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68736684796081 + 2713742254336 = 8290759^2 + 1647344^2 .

It is a cyclic number.

It is not a de Polignac number, because 71450427050417 - 2⁸ = 71450427050161 is a prime.

It is a super-2 number, since 2×71450427050417² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71450427050447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10187942 + ... + 15706527.

It is an arithmetic number, because the mean of its divisors is an integer number (17862613926045).

Almost surely, 2^{71450427050417} is an apocalyptic number.

It is an amenable number.

71450427050417 is a deficient number, since it is larger than the sum of its proper divisors (28653763).

71450427050417 is a wasteful number, since it uses less digits than its factorization.

71450427050417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28653762.

The product of its (nonzero) digits is 1097600, while the sum is 47.

The spelling of 71450427050417 in words is "seventy-one trillion, four hundred fifty billion, four hundred twenty-seven million, fifty thousand, four hundred seventeen".