8146806777747 has 32 divisors (see below), whose sum is σ = 13591284049920. Its totient is φ = 4778185788000.

The previous prime is 8146806777727. The next prime is 8146806777749. The reversal of 8146806777747 is 7477776086418.

It is a happy number.

It is not a de Polignac number, because 8146806777747 - 2⁸ = 8146806777491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8146806777749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442415404 + ... + 442433817.

It is an arithmetic number, because the mean of its divisors is an integer number (424727626560).

Almost surely, 2^{8146806777747} is an apocalyptic number.

8146806777747 is a deficient number, since it is larger than the sum of its proper divisors (5444477272173).

8146806777747 is a wasteful number, since it uses less digits than its factorization.

8146806777747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884849272 (or 884849266 counting only the distinct ones).

The product of its (nonzero) digits is 619573248, while the sum is 72.

The spelling of 8146806777747 in words is "eight trillion, one hundred forty-six billion, eight hundred six million, seven hundred seventy-seven thousand, seven hundred forty-seven".