7771942086418 has 8 divisors (see below), whose sum is σ = 11690938380348. Its totient is φ = 3874962626304.

The previous prime is 7771942086413. The next prime is 7771942086439. The reversal of 7771942086418 is 8146802491777.

It can be written as a sum of positive squares in 2 ways, for example, as 7616976252769 + 154965833649 = 2759887^2 + 393657^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 7771942086418.

It is not an unprimeable number, because it can be changed into a prime (7771942086413) 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, 5504207571 + ... + 5504208982.

Almost surely, 2^{7771942086418} is an apocalyptic number.

7771942086418 is a deficient number, since it is larger than the sum of its proper divisors (3918996293930).

7771942086418 is a wasteful number, since it uses less digits than its factorization.

7771942086418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11008416908.

The product of its (nonzero) digits is 37933056, while the sum is 64.

The spelling of 7771942086418 in words is "seven trillion, seven hundred seventy-one billion, nine hundred forty-two million, eighty-six thousand, four hundred eighteen".