71649743141 has 8 divisors (see below), whose sum is σ = 75879198144. Its totient is φ = 67421928640.

The previous prime is 71649743059. The next prime is 71649743153. The reversal of 71649743141 is 14134794617.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71649743141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71649743741) 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, 319625 + ... + 495438.

It is an arithmetic number, because the mean of its divisors is an integer number (9484899768).

Almost surely, 2^71649743141 is an apocalyptic number.

It is an amenable number.

71649743141 is a deficient number, since it is larger than the sum of its proper divisors (4229455003).

71649743141 is a wasteful number, since it uses less digits than its factorization.

71649743141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820251.

The product of its digits is 508032, while the sum is 47.

The spelling of 71649743141 in words is "seventy-one billion, six hundred forty-nine million, seven hundred forty-three thousand, one hundred forty-one".