71614464221 has 4 divisors (see below), whose sum is σ = 71617274652. Its totient is φ = 71611653792.

The previous prime is 71614464191. The next prime is 71614464223. The reversal of 71614464221 is 12246441617.

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 53974905625 + 17639558596 = 232325^2 + 132814^2 .

It is a cyclic number.

It is not a de Polignac number, because 71614464221 - 2¹⁴ = 71614447837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71614464223) 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, 1366640 + ... + 1418073.

It is an arithmetic number, because the mean of its divisors is an integer number (17904318663).

Almost surely, 2^71614464221 is an apocalyptic number.

It is an amenable number.

71614464221 is a deficient number, since it is larger than the sum of its proper divisors (2810431).

71614464221 is a wasteful number, since it uses less digits than its factorization.

71614464221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810430.

The product of its digits is 64512, while the sum is 38.

The spelling of 71614464221 in words is "seventy-one billion, six hundred fourteen million, four hundred sixty-four thousand, two hundred twenty-one".