13655433961 has 4 divisors (see below), whose sum is σ = 14705851972. Its totient is φ = 12605015952.

The previous prime is 13655433919. The next prime is 13655434021. The reversal of 13655433961 is 16933455631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16933455631 = 37 ⋅457660963.

It can be written as a sum of positive squares in 2 ways, for example, as 8959758336 + 4695675625 = 94656^2 + 68525^2 .

It is a cyclic number.

It is not a de Polignac number, because 13655433961 - 2⁷ = 13655433833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13655433161) 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, 525208986 + ... + 525209011.

It is an arithmetic number, because the mean of its divisors is an integer number (3676462993).

Almost surely, 2^13655433961 is an apocalyptic number.

It is an amenable number.

13655433961 is a deficient number, since it is larger than the sum of its proper divisors (1050418011).

13655433961 is a wasteful number, since it uses less digits than its factorization.

13655433961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050418010.

The product of its digits is 874800, while the sum is 46.

The spelling of 13655433961 in words is "thirteen billion, six hundred fifty-five million, four hundred thirty-three thousand, nine hundred sixty-one".