13531205534 has 32 divisors (see below), whose sum is σ = 25335023616. Its totient is φ = 5265666720.

The previous prime is 13531205507. The next prime is 13531205543. The reversal of 13531205534 is 43550213531.

It is a self number, because there is not a number n which added to its sum of digits gives 13531205534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79859 + ... + 182865.

It is an arithmetic number, because the mean of its divisors is an integer number (791719488).

Almost surely, 2^13531205534 is an apocalyptic number.

13531205534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13531205534 is a deficient number, since it is larger than the sum of its proper divisors (11803818082).

13531205534 is a wasteful number, since it uses less digits than its factorization.

13531205534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103880.

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 13531205534 in words is "thirteen billion, five hundred thirty-one million, two hundred five thousand, five hundred thirty-four".