71973238791166 has 8 divisors (see below), whose sum is σ = 108071502303600. Its totient is φ = 35949404689968.

The previous prime is 71973238791161. The next prime is 71973238791173. The reversal of 71973238791166 is 66119783237917.

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

It is a junction number, because it is equal to n+sod(n) for n = 71973238791095 and 71973238791104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71973238791161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18607350391 + ... + 18607354258.

It is an arithmetic number, because the mean of its divisors is an integer number (13508937787950).

Almost surely, 2^{71973238791166} is an apocalyptic number.

71973238791166 is a deficient number, since it is larger than the sum of its proper divisors (36098263512434).

71973238791166 is a wasteful number, since it uses less digits than its factorization.

71973238791166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37214705618.

The product of its digits is 144027072, while the sum is 70.

The spelling of 71973238791166 in words is "seventy-one trillion, nine hundred seventy-three billion, two hundred thirty-eight million, seven hundred ninety-one thousand, one hundred sixty-six".