7776415066 has 16 divisors (see below), whose sum is σ = 13641021504. Its totient is φ = 3255243264.

The previous prime is 7776415063. The next prime is 7776415079. The reversal of 7776415066 is 6605146777.

It is not an unprimeable number, because it can be changed into a prime (7776415061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6458215 + ... + 6459418.

It is an arithmetic number, because the mean of its divisors is an integer number (852563844).

Almost surely, 2^7776415066 is an apocalyptic number.

7776415066 is a deficient number, since it is larger than the sum of its proper divisors (5864606438).

7776415066 is a wasteful number, since it uses less digits than its factorization.

7776415066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917685.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The square root of 7776415066 is about 88183.9841808024. The cubic root of 7776415066 is about 1981.1915986514.

The spelling of 7776415066 in words is "seven billion, seven hundred seventy-six million, four hundred fifteen thousand, sixty-six".