77857488188330 has 16 divisors (see below), whose sum is σ = 142518791939040. Its totient is φ = 30615147897552.

The previous prime is 77857488188329. The next prime is 77857488188339. The reversal of 77857488188330 is 3388188475877.

It is not an unprimeable number, because it can be changed into a prime (77857488188339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65980921604 + ... + 65980922783.

It is an arithmetic number, because the mean of its divisors is an integer number (8907424496190).

Almost surely, 2^{77857488188330} is an apocalyptic number.

77857488188330 is a deficient number, since it is larger than the sum of its proper divisors (64661303750710).

77857488188330 is a wasteful number, since it uses less digits than its factorization.

77857488188330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131961844453.

The product of its (nonzero) digits is 2023096320, while the sum is 77.

The spelling of 77857488188330 in words is "seventy-seven trillion, eight hundred fifty-seven billion, four hundred eighty-eight million, one hundred eighty-eight thousand, three hundred thirty".