77740342868340 has 36 divisors (see below), whose sum is σ = 235812373367844. Its totient is φ = 20730758098176.

The previous prime is 77740342868303. The next prime is 77740342868347. The reversal of 77740342868340 is 4386824304777.

77740342868340 is a `hidden beast` number, since 7 + 7 + 7 + 4 + 0 + 3 + 4 + 286 + 8 + 340 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51893063171856 + 25847279696484 = 7203684^2 + 5084022^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77740342868347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215945396677 + ... + 215945397036.

Almost surely, 2^{77740342868340} is an apocalyptic number.

It is an amenable number.

77740342868340 is an abundant number, since it is smaller than the sum of its proper divisors (158072030499504).

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

77740342868340 is a wasteful number, since it uses less digits than its factorization.

77740342868340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431890793728 (or 431890793723 counting only the distinct ones).

The product of its (nonzero) digits is 151732224, while the sum is 63.

The spelling of 77740342868340 in words is "seventy-seven trillion, seven hundred forty billion, three hundred forty-two million, eight hundred sixty-eight thousand, three hundred forty".