77166249914 has 32 divisors (see below), whose sum is σ = 128050776336. Its totient is φ = 34644879360.

The previous prime is 77166249911. The next prime is 77166249931. The reversal of 77166249914 is 41994266177.

It can be written as a sum of positive squares in 8 ways, for example, as 42059857225 + 35106392689 = 205085^2 + 187367^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77166249914.

It is not an unprimeable number, because it can be changed into a prime (77166249911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8400404 + ... + 8409584.

Almost surely, 2^77166249914 is an apocalyptic number.

77166249914 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

77166249914 is a deficient number, since it is larger than the sum of its proper divisors (50884526422).

77166249914 is a wasteful number, since it uses less digits than its factorization.

77166249914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17970.

The product of its digits is 4572288, while the sum is 56.

The spelling of 77166249914 in words is "seventy-seven billion, one hundred sixty-six million, two hundred forty-nine thousand, nine hundred fourteen".