71346730221 has 12 divisors (see below), whose sum is σ = 110983802748. Its totient is φ = 43905680064.

The previous prime is 71346730207. The next prime is 71346730229. The reversal of 71346730221 is 12203764317.

71346730221 is a `hidden beast` number, since 7 + 1 + 346 + 7 + 302 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7408044900 + 63938685321 = 86070^2 + 252861^2 .

It is not a de Polignac number, because 71346730221 - 2⁷ = 71346730093 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71346730229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304900440 + ... + 304900673.

It is an arithmetic number, because the mean of its divisors is an integer number (9248650229).

Almost surely, 2^71346730221 is an apocalyptic number.

It is an amenable number.

71346730221 is a deficient number, since it is larger than the sum of its proper divisors (39637072527).

71346730221 is a wasteful number, since it uses less digits than its factorization.

71346730221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609801132 (or 609801129 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The spelling of 71346730221 in words is "seventy-one billion, three hundred forty-six million, seven hundred thirty thousand, two hundred twenty-one".