71214172220 has 48 divisors (see below), whose sum is σ = 153804819168. Its totient is φ = 27681911040.

The previous prime is 71214172207. The next prime is 71214172243. The reversal of 71214172220 is 2227141217.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40751 + ... + 379590.

It is an arithmetic number, because the mean of its divisors is an integer number (3204267066).

Almost surely, 2^71214172220 is an apocalyptic number.

It is an amenable number.

71214172220 is an abundant number, since it is smaller than the sum of its proper divisors (82590646948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71214172220 is a wasteful number, since it uses less digits than its factorization.

71214172220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420590 (or 420588 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The spelling of 71214172220 in words is "seventy-one billion, two hundred fourteen million, one hundred seventy-two thousand, two hundred twenty".