71272515772 has 24 divisors (see below), whose sum is σ = 128793674240. Its totient is φ = 34475096880.

The previous prime is 71272515767. The next prime is 71272515841. The reversal of 71272515772 is 27751527217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279163 + ... + 469549.

Almost surely, 2^71272515772 is an apocalyptic number.

It is an amenable number.

71272515772 is a deficient number, since it is larger than the sum of its proper divisors (57521158468).

71272515772 is a wasteful number, since it uses less digits than its factorization.

71272515772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193441 (or 193439 counting only the distinct ones).

The product of its digits is 480200, while the sum is 46.

The spelling of 71272515772 in words is "seventy-one billion, two hundred seventy-two million, five hundred fifteen thousand, seven hundred seventy-two".