71786381382 has 40 divisors (see below), whose sum is σ = 166043541312. Its totient is φ = 23156895600.

The previous prime is 71786381297. The next prime is 71786381417. The reversal of 71786381382 is 28318368717.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7142169 + ... + 7152212.

Almost surely, 2^71786381382 is an apocalyptic number.

71786381382 is an abundant number, since it is smaller than the sum of its proper divisors (94257159930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71786381382 is a wasteful number, since it uses less digits than its factorization.

71786381382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14294426 (or 14294417 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The spelling of 71786381382 in words is "seventy-one billion, seven hundred eighty-six million, three hundred eighty-one thousand, three hundred eighty-two".