13556003481 has 32 divisors (see below), whose sum is σ = 20166432000. Its totient is φ = 8999869824.

The previous prime is 13556003467. The next prime is 13556003491. The reversal of 13556003481 is 18430065531.

13556003481 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 600 + 3 + 48 + 1 = 666.

It is not a de Polignac number, because 13556003481 - 2¹³ = 13555995289 is a prime.

It is a super-2 number, since 2×13556003481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13556003431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12006525 + ... + 12007653.

It is an arithmetic number, because the mean of its divisors is an integer number (630201000).

Almost surely, 2^13556003481 is an apocalyptic number.

It is an amenable number.

13556003481 is a deficient number, since it is larger than the sum of its proper divisors (6610428519).

13556003481 is a wasteful number, since it uses less digits than its factorization.

13556003481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590 (or 2584 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 13556003481 in words is "thirteen billion, five hundred fifty-six million, three thousand, four hundred eighty-one".