77704070855886 has 16 divisors (see below), whose sum is σ = 172675713013200. Its totient is φ = 25901356951944.

The previous prime is 77704070855849. The next prime is 77704070855909. The reversal of 77704070855886 is 68855807040777.

It is a happy number.

77704070855886 is a `hidden beast` number, since 77 + 70 + 407 + 0 + 8 + 5 + 5 + 8 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719482137501 + ... + 719482137608.

It is an arithmetic number, because the mean of its divisors is an integer number (10792232063325).

Almost surely, 2^{77704070855886} is an apocalyptic number.

77704070855886 is an abundant number, since it is smaller than the sum of its proper divisors (94971642157314).

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

77704070855886 is a wasteful number, since it uses less digits than its factorization.

77704070855886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438964275120 (or 1438964275114 counting only the distinct ones).

The product of its (nonzero) digits is 737587200, while the sum is 72.

The spelling of 77704070855886 in words is "seventy-seven trillion, seven hundred four billion, seventy million, eight hundred fifty-five thousand, eight hundred eighty-six".