13494163661 has 16 divisors (see below), whose sum is σ = 15800375808. Its totient is φ = 11387635200.

The previous prime is 13494163651. The next prime is 13494163667. The reversal of 13494163661 is 16636149431.

It is a cyclic number.

It is not a de Polignac number, because 13494163661 - 2²² = 13489969357 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 (13494163667) 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, 480605 + ... + 507906.

It is an arithmetic number, because the mean of its divisors is an integer number (987523488).

Almost surely, 2^13494163661 is an apocalyptic number.

13494163661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13494163661 is a deficient number, since it is larger than the sum of its proper divisors (2306212147).

13494163661 is a wasteful number, since it uses less digits than its factorization.

13494163661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988612.

The product of its digits is 279936, while the sum is 44.

The spelling of 13494163661 in words is "thirteen billion, four hundred ninety-four million, one hundred sixty-three thousand, six hundred sixty-one".