77377742986 has 32 divisors (see below), whose sum is σ = 123428448000. Its totient is φ = 36324005760.

The previous prime is 77377742863. The next prime is 77377742989. The reversal of 77377742986 is 68924777377.

It is not an unprimeable number, because it can be changed into a prime (77377742989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171915 + ... + 429313.

It is an arithmetic number, because the mean of its divisors is an integer number (3857139000).

Almost surely, 2^77377742986 is an apocalyptic number.

77377742986 is a deficient number, since it is larger than the sum of its proper divisors (46050705014).

77377742986 is a wasteful number, since it uses less digits than its factorization.

77377742986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257574.

The product of its digits is 174254976, while the sum is 67.

The spelling of 77377742986 in words is "seventy-seven billion, three hundred seventy-seven million, seven hundred forty-two thousand, nine hundred eighty-six".