77111012 has 24 divisors (see below), whose sum is σ = 151963392. Its totient is φ = 33919200.

The previous prime is 77111011. The next prime is 77111039. The reversal of 77111012 is 21011177.

It is a super-2 number, since 2×77111012² = 11892216343328288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77111011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26903 + ... + 29630.

It is an arithmetic number, because the mean of its divisors is an integer number (6331808).

Almost surely, 2^77111012 is an apocalyptic number.

It is an amenable number.

77111012 is a deficient number, since it is larger than the sum of its proper divisors (74852380).

77111012 is a wasteful number, since it uses less digits than its factorization.

77111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56579 (or 56577 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 20.

The square root of 77111012 is about 8781.2876049017. The cubic root of 77111012 is about 425.6364388426.

Adding to 77111012 its reverse (21011177), we get a palindrome (98122189).

The spelling of 77111012 in words is "seventy-seven million, one hundred eleven thousand, twelve".