13546409481 has 24 divisors (see below), whose sum is σ = 22034438400. Its totient is φ = 7945106400.

The previous prime is 13546409449. The next prime is 13546409483. The reversal of 13546409481 is 18490464531.

13546409481 is a `hidden beast` number, since 13 + 546 + 4 + 0 + 94 + 8 + 1 = 666.

It is not a de Polignac number, because 13546409481 - 2⁵ = 13546409449 is a prime.

It is a super-2 number, since 2×13546409481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13546409483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2203906 + ... + 2210043.

It is an arithmetic number, because the mean of its divisors is an integer number (918101600).

Almost surely, 2^13546409481 is an apocalyptic number.

13546409481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13546409481 is a deficient number, since it is larger than the sum of its proper divisors (8488028919).

13546409481 is a wasteful number, since it uses less digits than its factorization.

13546409481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413997 (or 4413994 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 13546409481 in words is "thirteen billion, five hundred forty-six million, four hundred nine thousand, four hundred eighty-one".