13654494821 has 16 divisors (see below), whose sum is σ = 15416481600. Its totient is φ = 11979676800.

The previous prime is 13654494811. The next prime is 13654494829. The reversal of 13654494821 is 12849445631.

It is a cyclic number.

It is not a de Polignac number, because 13654494821 - 2⁶ = 13654494757 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 (13654494829) 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, 795710 + ... + 812688.

It is an arithmetic number, because the mean of its divisors is an integer number (963530100).

Almost surely, 2^13654494821 is an apocalyptic number.

13654494821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13654494821 is a deficient number, since it is larger than the sum of its proper divisors (1761986779).

13654494821 is a wasteful number, since it uses less digits than its factorization.

13654494821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19540.

The product of its digits is 829440, while the sum is 47.

The spelling of 13654494821 in words is "thirteen billion, six hundred fifty-four million, four hundred ninety-four thousand, eight hundred twenty-one".