71221572701671 has 8 divisors (see below), whose sum is σ = 82235217965600. Its totient is φ = 60417711157248.

The previous prime is 71221572701663. The next prime is 71221572701693. The reversal of 71221572701671 is 17610727512217.

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

It is a cyclic number.

It is not a de Polignac number, because 71221572701671 - 2³ = 71221572701663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71221572701621) 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, 52445929146 + ... + 52445930503.

It is an arithmetic number, because the mean of its divisors is an integer number (10279402245700).

Almost surely, 2^{71221572701671} is an apocalyptic number.

71221572701671 is a deficient number, since it is larger than the sum of its proper divisors (11013645263929).

71221572701671 is a wasteful number, since it uses less digits than its factorization.

71221572701671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104891859753.

The product of its (nonzero) digits is 576240, while the sum is 49.

The spelling of 71221572701671 in words is "seventy-one trillion, two hundred twenty-one billion, five hundred seventy-two million, seven hundred one thousand, six hundred seventy-one".