77659541889 has 16 divisors (see below), whose sum is σ = 103950587328. Its totient is φ = 51570873792.

The previous prime is 77659541809. The next prime is 77659541891. The reversal of 77659541889 is 98814595677.

It is not a de Polignac number, because 77659541889 - 2⁷ = 77659541761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77659541809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3268119 + ... + 3291795.

It is an arithmetic number, because the mean of its divisors is an integer number (6496911708).

Almost surely, 2^77659541889 is an apocalyptic number.

It is an amenable number.

77659541889 is a deficient number, since it is larger than the sum of its proper divisors (26291045439).

77659541889 is a wasteful number, since it uses less digits than its factorization.

77659541889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27904.

The product of its digits is 152409600, while the sum is 69.

The spelling of 77659541889 in words is "seventy-seven billion, six hundred fifty-nine million, five hundred forty-one thousand, eight hundred eighty-nine".