13656434061 has 16 divisors (see below), whose sum is σ = 18822855168. Its totient is φ = 8797992000.

The previous prime is 13656434059. The next prime is 13656434093. The reversal of 13656434061 is 16043465631.

It is not a de Polignac number, because 13656434061 - 2¹ = 13656434059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13656434041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39546 + ... + 169931.

It is an arithmetic number, because the mean of its divisors is an integer number (1176428448).

Almost surely, 2^13656434061 is an apocalyptic number.

It is an amenable number.

13656434061 is a deficient number, since it is larger than the sum of its proper divisors (5166421107).

13656434061 is a wasteful number, since it uses less digits than its factorization.

13656434061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210212.

The product of its (nonzero) digits is 155520, while the sum is 39.

Adding to 13656434061 its reverse (16043465631), we get a palindrome (29699899692).

The spelling of 13656434061 in words is "thirteen billion, six hundred fifty-six million, four hundred thirty-four thousand, sixty-one".