71894603217 has 8 divisors (see below), whose sum is σ = 96112399840. Its totient is φ = 47803271040.

The previous prime is 71894603201. The next prime is 71894603299. The reversal of 71894603217 is 71230649817.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71894603217 - 2⁴ = 71894603201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71894603017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31614784 + ... + 31617057.

It is an arithmetic number, because the mean of its divisors is an integer number (12014049980).

Almost surely, 2^71894603217 is an apocalyptic number.

It is an amenable number.

71894603217 is a deficient number, since it is larger than the sum of its proper divisors (24217796623).

71894603217 is a wasteful number, since it uses less digits than its factorization.

71894603217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63232223.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 71894603217 in words is "seventy-one billion, eight hundred ninety-four million, six hundred three thousand, two hundred seventeen".