71781053820292 has 12 divisors (see below), whose sum is σ = 132228257037520. Its totient is φ = 34001551809576.

The previous prime is 71781053820283. The next prime is 71781053820317. The reversal of 71781053820292 is 29202835018717.

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, 472243775058 + ... + 472243775209.

Almost surely, 2^{71781053820292} is an apocalyptic number.

It is an amenable number.

71781053820292 is a deficient number, since it is larger than the sum of its proper divisors (60447203217228).

71781053820292 is a wasteful number, since it uses less digits than its factorization.

71781053820292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944487550290 (or 944487550288 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 71781053820292 in words is "seventy-one trillion, seven hundred eighty-one billion, fifty-three million, eight hundred twenty thousand, two hundred ninety-two".