13776766551 has 16 divisors (see below), whose sum is σ = 20450143200. Its totient is φ = 9166457664.

The previous prime is 13776766543. The next prime is 13776766583. The reversal of 13776766551 is 15566767731.

13776766551 is a `hidden beast` number, since 13 + 7 + 7 + 6 + 76 + 6 + 551 = 666.

13776766551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13776766551 - 2³ = 13776766543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13776766501) 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, 487486 + ... + 514971.

It is an arithmetic number, because the mean of its divisors is an integer number (1278133950).

Almost surely, 2^13776766551 is an apocalyptic number.

13776766551 is a deficient number, since it is larger than the sum of its proper divisors (6673376649).

13776766551 is a wasteful number, since it uses less digits than its factorization.

13776766551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002975 (or 1002969 counting only the distinct ones).

The product of its digits is 5556600, while the sum is 54.

The spelling of 13776766551 in words is "thirteen billion, seven hundred seventy-six million, seven hundred sixty-six thousand, five hundred fifty-one".