77887033689 has 8 divisors (see below), whose sum is σ = 109958165280. Its totient is φ = 48870295616.

The previous prime is 77887033661. The next prime is 77887033703. The reversal of 77887033689 is 98633078877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77887033689 - 2⁷ = 77887033561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77887033589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763598319 + ... + 763598420.

It is an arithmetic number, because the mean of its divisors is an integer number (13744770660).

Almost surely, 2^77887033689 is an apocalyptic number.

It is an amenable number.

77887033689 is a deficient number, since it is larger than the sum of its proper divisors (32071131591).

77887033689 is a wasteful number, since it uses less digits than its factorization.

77887033689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527196759.

The product of its (nonzero) digits is 85349376, while the sum is 66.

The spelling of 77887033689 in words is "seventy-seven billion, eight hundred eighty-seven million, thirty-three thousand, six hundred eighty-nine".