71054571217 has 32 divisors (see below), whose sum is σ = 82440610560. Its totient is φ = 59986517760.

The previous prime is 71054571197. The next prime is 71054571281. The reversal of 71054571217 is 71217545017.

It is a cyclic number.

It is not a de Polignac number, because 71054571217 - 2¹⁹ = 71054046929 is a prime.

It is a super-2 number, since 2×71054571217² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71054571217.

It is not an unprimeable number, because it can be changed into a prime (71054571517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100217659 + ... + 100218367.

It is an arithmetic number, because the mean of its divisors is an integer number (2576269080).

Almost surely, 2^71054571217 is an apocalyptic number.

It is an amenable number.

71054571217 is a deficient number, since it is larger than the sum of its proper divisors (11386039343).

71054571217 is a wasteful number, since it uses less digits than its factorization.

71054571217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513.

The product of its (nonzero) digits is 68600, while the sum is 40.

The spelling of 71054571217 in words is "seventy-one billion, fifty-four million, five hundred seventy-one thousand, two hundred seventeen".