13656651776 has 48 divisors (see below), whose sum is σ = 27459923400. Its totient is φ = 6789996544.

The previous prime is 13656651739. The next prime is 13656651781. The reversal of 13656651776 is 67715665631.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 347966 + ... + 385218.

Almost surely, 2^13656651776 is an apocalyptic number.

13656651776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13656651776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13729961700).

13656651776 is an abundant number, since it is smaller than the sum of its proper divisors (13803271624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13656651776 is an equidigital number, since it uses as much as digits as its factorization.

13656651776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37454 (or 37434 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 53.

The spelling of 13656651776 in words is "thirteen billion, six hundred fifty-six million, six hundred fifty-one thousand, seven hundred seventy-six".