13776639087 has 8 divisors (see below), whose sum is σ = 18385755136. Its totient is φ = 9175974552.

The previous prime is 13776639077. The next prime is 13776639091. The reversal of 13776639087 is 78093667731.

It is a happy number.

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

It is not a de Polignac number, because 13776639087 - 2²⁰ = 13775590511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13776639007) 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 7 ways as a sum of consecutive naturals, for example, 2109073 + ... + 2115594.

It is an arithmetic number, because the mean of its divisors is an integer number (2298219392).

Almost surely, 2^13776639087 is an apocalyptic number.

13776639087 is a deficient number, since it is larger than the sum of its proper divisors (4609116049).

13776639087 is a wasteful number, since it uses less digits than its factorization.

13776639087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225757.

The product of its (nonzero) digits is 8001504, while the sum is 57.

The spelling of 13776639087 in words is "thirteen billion, seven hundred seventy-six million, six hundred thirty-nine thousand, eighty-seven".