77213765780334 has 24 divisors (see below), whose sum is σ = 167297298157080. Its totient is φ = 25737797983248.

The previous prime is 77213765780299. The next prime is 77213765780339. The reversal of 77213765780334 is 43308756731277.

77213765780334 is a `hidden beast` number, since 7 + 7 + 21 + 3 + 7 + 6 + 578 + 0 + 3 + 34 = 666.

77213765780334 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77213765780339) 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, 6447532 + ... + 13999935.

It is an arithmetic number, because the mean of its divisors is an integer number (6970720756545).

Almost surely, 2^{77213765780334} is an apocalyptic number.

77213765780334 is an abundant number, since it is smaller than the sum of its proper divisors (90083532376746).

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

77213765780334 is a wasteful number, since it uses less digits than its factorization.

77213765780334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20657264 (or 20657261 counting only the distinct ones).

The product of its (nonzero) digits is 124467840, while the sum is 63.

The spelling of 77213765780334 in words is "seventy-seven trillion, two hundred thirteen billion, seven hundred sixty-five million, seven hundred eighty thousand, three hundred thirty-four".