13663661435 has 16 divisors (see below), whose sum is σ = 16918941312. Its totient is φ = 10586457600.

The previous prime is 13663661423. The next prime is 13663661471. The reversal of 13663661435 is 53416636631.

It is not a de Polignac number, because 13663661435 - 2⁴ = 13663661419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215171 + ... + 271340.

It is an arithmetic number, because the mean of its divisors is an integer number (1057433832).

Almost surely, 2^13663661435 is an apocalyptic number.

13663661435 is a deficient number, since it is larger than the sum of its proper divisors (3255279877).

13663661435 is a wasteful number, since it uses less digits than its factorization.

13663661435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486694.

The product of its digits is 699840, while the sum is 44.

The spelling of 13663661435 in words is "thirteen billion, six hundred sixty-three million, six hundred sixty-one thousand, four hundred thirty-five".