71309293444 has 9 divisors (see below), whose sum is σ = 124792198167. Its totient is φ = 35654379684.

The previous prime is 71309293441. The next prime is 71309293453. The reversal of 71309293444 is 44439290317.

The square root of 71309293444 is 267038.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×71309293444² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71309293394 and 71309293403.

It is not an unprimeable number, because it can be changed into a prime (71309293441) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 467317 + ... + 600835.

Almost surely, 2^71309293444 is an apocalyptic number.

71309293444 is the 267038-th square number.

It is an amenable number.

71309293444 is a deficient number, since it is larger than the sum of its proper divisors (53482904723).

71309293444 is an frugal number, since it uses more digits than its factorization.

71309293444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267042 (or 133521 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 71309293444 in words is "seventy-one billion, three hundred nine million, two hundred ninety-three thousand, four hundred forty-four".