5166377778 has 16 divisors (see below), whose sum is σ = 10527713856. Its totient is φ = 1689632880.

The previous prime is 5166377729. The next prime is 5166377779. The reversal of 5166377778 is 8777736615.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5166377779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8122918 + ... + 8123553.

It is an arithmetic number, because the mean of its divisors is an integer number (657982116).

Almost surely, 2^5166377778 is an apocalyptic number.

5166377778 is an abundant number, since it is smaller than the sum of its proper divisors (5361336078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5166377778 is a wasteful number, since it uses less digits than its factorization.

5166377778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16246529.

The product of its digits is 10372320, while the sum is 57.

The square root of 5166377778 is about 71877.5192810659. The cubic root of 5166377778 is about 1728.7361745315.

The spelling of 5166377778 in words is "five billion, one hundred sixty-six million, three hundred seventy-seven thousand, seven hundred seventy-eight".