77742104860854 has 48 divisors (see below), whose sum is σ = 192513263119008. Its totient is φ = 22210991099136.

The previous prime is 77742104860853. The next prime is 77742104860933. The reversal of 77742104860854 is 45806840124777.

77742104860854 is a `hidden beast` number, since 7 + 7 + 7 + 4 + 2 + 10 + 4 + 8 + 608 + 5 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 77742104860791 and 77742104860800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77742104860853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11721907 + ... + 17113950.

It is an arithmetic number, because the mean of its divisors is an integer number (4010692981646).

Almost surely, 2^{77742104860854} is an apocalyptic number.

77742104860854 is an abundant number, since it is smaller than the sum of its proper divisors (114771158258154).

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

77742104860854 is a wasteful number, since it uses less digits than its factorization.

77742104860854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28857269 (or 28857266 counting only the distinct ones).

The product of its (nonzero) digits is 84295680, while the sum is 63.

The spelling of 77742104860854 in words is "seventy-seven trillion, seven hundred forty-two billion, one hundred four million, eight hundred sixty thousand, eight hundred fifty-four".