71660633243 has 8 divisors (see below), whose sum is σ = 73731848400. Its totient is φ = 69604817920.

The previous prime is 71660633201. The next prime is 71660633269. The reversal of 71660633243 is 34233606617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71660633243 - 2⁸ = 71660632987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71660633243.

It is not an unprimeable number, because it can be changed into a prime (71660630243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3840518 + ... + 3859131.

It is an arithmetic number, because the mean of its divisors is an integer number (9216481050).

Almost surely, 2^71660633243 is an apocalyptic number.

71660633243 is a deficient number, since it is larger than the sum of its proper divisors (2071215157).

71660633243 is a wasteful number, since it uses less digits than its factorization.

71660633243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699917.

The product of its (nonzero) digits is 326592, while the sum is 41.

The spelling of 71660633243 in words is "seventy-one billion, six hundred sixty million, six hundred thirty-three thousand, two hundred forty-three".