77111122118 has 8 divisors (see below), whose sum is σ = 115667866512. Its totient is φ = 38555166616.

The previous prime is 77111122117. The next prime is 77111122141. The reversal of 77111122118 is 81122111177.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×77111122118² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77111122117) 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, 249671 + ... + 465357.

It is an arithmetic number, because the mean of its divisors is an integer number (14458483314).

Almost surely, 2^77111122118 is an apocalyptic number.

77111122118 is a deficient number, since it is larger than the sum of its proper divisors (38556744394).

77111122118 is a wasteful number, since it uses less digits than its factorization.

77111122118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394446.

The product of its digits is 1568, while the sum is 32.

The spelling of 77111122118 in words is "seventy-seven billion, one hundred eleven million, one hundred twenty-two thousand, one hundred eighteen".