77558333506 has 16 divisors (see below), whose sum is σ = 120104490240. Its totient is φ = 37523798640.

The previous prime is 77558333473. The next prime is 77558333509. The reversal of 77558333506 is 60533385577.

It is not an unprimeable number, because it can be changed into a prime (77558333509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490525 + ... + 629071.

It is an arithmetic number, because the mean of its divisors is an integer number (7506530640).

Almost surely, 2^77558333506 is an apocalyptic number.

77558333506 is a deficient number, since it is larger than the sum of its proper divisors (42546156734).

77558333506 is a wasteful number, since it uses less digits than its factorization.

77558333506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147609.

The product of its (nonzero) digits is 7938000, while the sum is 52.

The spelling of 77558333506 in words is "seventy-seven billion, five hundred fifty-eight million, three hundred thirty-three thousand, five hundred six".