71282394272 has 24 divisors (see below), whose sum is σ = 148592345076. Its totient is φ = 33544655872.

The previous prime is 71282394251. The next prime is 71282394277. The reversal of 71282394272 is 27249328217.

It can be written as a sum of positive squares in 2 ways, for example, as 52424513296 + 18857880976 = 228964^2 + 137324^2 .

It is not an unprimeable number, because it can be changed into a prime (71282394277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65516363 + ... + 65517450.

Almost surely, 2^71282394272 is an apocalyptic number.

It is an amenable number.

71282394272 is an abundant number, since it is smaller than the sum of its proper divisors (77309950804).

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

71282394272 is a wasteful number, since it uses less digits than its factorization.

71282394272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131033840 (or 131033832 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The spelling of 71282394272 in words is "seventy-one billion, two hundred eighty-two million, three hundred ninety-four thousand, two hundred seventy-two".