77811113444 has 12 divisors (see below), whose sum is σ = 136239906684. Its totient is φ = 38885425824.

The previous prime is 77811113441. The next prime is 77811113449. The reversal of 77811113444 is 44431111877.

It can be written as a sum of positive squares in 2 ways, for example, as 43634196544 + 34176916900 = 208888^2 + 184870^2 .

It is a super-3 number, since 3×77811113444³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77811113441) 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, 5024027 + ... + 5039490.

It is an arithmetic number, because the mean of its divisors is an integer number (11353325557).

Almost surely, 2^77811113444 is an apocalyptic number.

It is an amenable number.

77811113444 is a deficient number, since it is larger than the sum of its proper divisors (58428793240).

77811113444 is a wasteful number, since it uses less digits than its factorization.

77811113444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065454 (or 10065452 counting only the distinct ones).

The product of its digits is 75264, while the sum is 41.

The spelling of 77811113444 in words is "seventy-seven billion, eight hundred eleven million, one hundred thirteen thousand, four hundred forty-four".