13566420255151 has 4 divisors (see below), whose sum is σ = 13597896868704. Its totient is φ = 13534943641600.

The previous prime is 13566420255107. The next prime is 13566420255209. The reversal of 13566420255151 is 15155202466531.

It is a happy number.

13566420255151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13566420255151 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 (13566420259151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15738306130 + ... + 15738306991.

It is an arithmetic number, because the mean of its divisors is an integer number (3399474217176).

Almost surely, 2^{13566420255151} is an apocalyptic number.

13566420255151 is a deficient number, since it is larger than the sum of its proper divisors (31476613553).

13566420255151 is an equidigital number, since it uses as much as digits as its factorization.

13566420255151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31476613552.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 13566420255151 in words is "thirteen trillion, five hundred sixty-six billion, four hundred twenty million, two hundred fifty-five thousand, one hundred fifty-one".