7138578861766 has 8 divisors (see below), whose sum is σ = 11681310864744. Its totient is φ = 3244808573520.

The previous prime is 7138578861749. The next prime is 7138578861853. The reversal of 7138578861766 is 6671688758317.

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

It is a congruent number.

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, 162240428655 + ... + 162240428698.

It is an arithmetic number, because the mean of its divisors is an integer number (1460163858093).

Almost surely, 2^{7138578861766} is an apocalyptic number.

7138578861766 is a deficient number, since it is larger than the sum of its proper divisors (4542732002978).

7138578861766 is a wasteful number, since it uses less digits than its factorization.

7138578861766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324480857366.

The product of its digits is 568995840, while the sum is 73.

The spelling of 7138578861766 in words is "seven trillion, one hundred thirty-eight billion, five hundred seventy-eight million, eight hundred sixty-one thousand, seven hundred sixty-six".