77081112 has 96 divisors (see below), whose sum is σ = 220345200. Its totient is φ = 24966144.

The previous prime is 77081099. The next prime is 77081113. The reversal of 77081112 is 21118077.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77081113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399288 + ... + 399480.

Almost surely, 2^77081112 is an apocalyptic number.

77081112 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77081112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110172600).

77081112 is an abundant number, since it is smaller than the sum of its proper divisors (143264088).

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

77081112 is a wasteful number, since it uses less digits than its factorization.

77081112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 77081112 is about 8779.5849560216. The cubic root of 77081112 is about 425.5814178434.

Adding to 77081112 its reverse (21118077), we get a palindrome (98199189).

The spelling of 77081112 in words is "seventy-seven million, eighty-one thousand, one hundred twelve".