77187581107 has 16 divisors (see below), whose sum is σ = 95840821440. Its totient is φ = 60531028992.

The previous prime is 77187581087. The next prime is 77187581143. The reversal of 77187581107 is 70118578177.

It is a de Polignac number, because none of the positive numbers 2^k-77187581107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77187581197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3742882 + ... + 3763447.

It is an arithmetic number, because the mean of its divisors is an integer number (5990051340).

Almost surely, 2^77187581107 is an apocalyptic number.

77187581107 is a deficient number, since it is larger than the sum of its proper divisors (18653240333).

77187581107 is a wasteful number, since it uses less digits than its factorization.

77187581107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7506462.

The product of its (nonzero) digits is 768320, while the sum is 52.

The spelling of 77187581107 in words is "seventy-seven billion, one hundred eighty-seven million, five hundred eighty-one thousand, one hundred seven".