71644983734 has 16 divisors (see below), whose sum is σ = 107633988000. Its totient is φ = 35767019904.

The previous prime is 71644983727. The next prime is 71644983737. The reversal of 71644983734 is 43738944617.

It is a self number, because there is not a number n which added to its sum of digits gives 71644983734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71644983737) 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, 6197792 + ... + 6209340.

It is an arithmetic number, because the mean of its divisors is an integer number (6727124250).

Almost surely, 2^71644983734 is an apocalyptic number.

71644983734 is a deficient number, since it is larger than the sum of its proper divisors (35989004266).

71644983734 is a wasteful number, since it uses less digits than its factorization.

71644983734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16087.

The product of its digits is 12192768, while the sum is 56.

The spelling of 71644983734 in words is "seventy-one billion, six hundred forty-four million, nine hundred eighty-three thousand, seven hundred thirty-four".