71409262221 has 24 divisors (see below), whose sum is σ = 112632776256. Its totient is φ = 43236383040.

The previous prime is 71409262201. The next prime is 71409262307. The reversal of 71409262221 is 12226290417.

71409262221 is a `hidden beast` number, since 7 + 1 + 4 + 0 + 9 + 2 + 622 + 21 = 666.

It is not a de Polignac number, because 71409262221 - 2⁵ = 71409262189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71409262201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246865 + ... + 451398.

It is an arithmetic number, because the mean of its divisors is an integer number (4693032344).

Almost surely, 2^71409262221 is an apocalyptic number.

It is an amenable number.

71409262221 is a deficient number, since it is larger than the sum of its proper divisors (41223514035).

71409262221 is a wasteful number, since it uses less digits than its factorization.

71409262221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699313 (or 699310 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 71409262221 in words is "seventy-one billion, four hundred nine million, two hundred sixty-two thousand, two hundred twenty-one".