77729345134 has 24 divisors (see below), whose sum is σ = 140306669640. Its totient is φ = 32163865776.

The previous prime is 77729345063. The next prime is 77729345137. The reversal of 77729345134 is 43154392777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77729345137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13672272 + ... + 13677955.

It is an arithmetic number, because the mean of its divisors is an integer number (5846111235).

Almost surely, 2^77729345134 is an apocalyptic number.

77729345134 is a deficient number, since it is larger than the sum of its proper divisors (62577324506).

77729345134 is a wasteful number, since it uses less digits than its factorization.

77729345134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27350272 (or 27350265 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 52.

The spelling of 77729345134 in words is "seventy-seven billion, seven hundred twenty-nine million, three hundred forty-five thousand, one hundred thirty-four".