71665303412 has 12 divisors (see below), whose sum is σ = 125479242336. Its totient is φ = 35814091320.

The previous prime is 71665303403. The next prime is 71665303487. The reversal of 71665303412 is 21430356617.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4631408 + ... + 4646855.

It is an arithmetic number, because the mean of its divisors is an integer number (10456603528).

Almost surely, 2^71665303412 is an apocalyptic number.

It is an amenable number.

71665303412 is a deficient number, since it is larger than the sum of its proper divisors (53813938924).

71665303412 is a wasteful number, since it uses less digits than its factorization.

71665303412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9280198 (or 9280196 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 71665303412 in words is "seventy-one billion, six hundred sixty-five million, three hundred three thousand, four hundred twelve".