77555057780075 has 12 divisors (see below), whose sum is σ = 96316908872400. Its totient is φ = 61948151240160.

The previous prime is 77555057780071. The next prime is 77555057780093. The reversal of 77555057780075 is 57008775055577.

It is not a de Polignac number, because 77555057780075 - 2² = 77555057780071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77555057779987 and 77555057780014.

It is not an unprimeable number, because it can be changed into a prime (77555057780071) 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, 2397358100 + ... + 2397390449.

It is an arithmetic number, because the mean of its divisors is an integer number (8026409072700).

Almost surely, 2^{77555057780075} is an apocalyptic number.

77555057780075 is a deficient number, since it is larger than the sum of its proper divisors (18761851092325).

77555057780075 is a wasteful number, since it uses less digits than its factorization.

77555057780075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4794749206 (or 4794749201 counting only the distinct ones).

The product of its (nonzero) digits is 420175000, while the sum is 68.

The spelling of 77555057780075 in words is "seventy-seven trillion, five hundred fifty-five billion, fifty-seven million, seven hundred eighty thousand, seventy-five".