77895680187 has 16 divisors (see below), whose sum is σ = 115458280448. Its totient is φ = 46389486240.

The previous prime is 77895680147. The next prime is 77895680189. The reversal of 77895680187 is 78108659877.

It is not a de Polignac number, because 77895680187 - 2¹⁰ = 77895679163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77895680189) 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 15 ways as a sum of consecutive naturals, for example, 32213713 + ... + 32216130.

It is an arithmetic number, because the mean of its divisors is an integer number (7216142528).

Almost surely, 2^77895680187 is an apocalyptic number.

77895680187 is a deficient number, since it is larger than the sum of its proper divisors (37562600261).

77895680187 is a wasteful number, since it uses less digits than its factorization.

77895680187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64429890.

The product of its (nonzero) digits is 47416320, while the sum is 66.

The spelling of 77895680187 in words is "seventy-seven billion, eight hundred ninety-five million, six hundred eighty thousand, one hundred eighty-seven".