71335821472 has 12 divisors (see below), whose sum is σ = 140442398586. Its totient is φ = 35667910720.

The previous prime is 71335821457. The next prime is 71335821553. The reversal of 71335821472 is 27412853317.

It can be written as a sum of positive squares in only one way, i.e., 71052101136 + 283720336 = 266556^2 + 16844^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114622179 + ... + 1114622242.

Almost surely, 2^71335821472 is an apocalyptic number.

It is an amenable number.

71335821472 is a deficient number, since it is larger than the sum of its proper divisors (69106577114).

71335821472 is a wasteful number, since it uses less digits than its factorization.

71335821472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229244431 (or 2229244423 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The spelling of 71335821472 in words is "seventy-one billion, three hundred thirty-five million, eight hundred twenty-one thousand, four hundred seventy-two".