15543253453 has 32 divisors (see below), whose sum is σ = 19808409600. Its totient is φ = 11862740736.

The previous prime is 15543253441. The next prime is 15543253483. The reversal of 15543253453 is 35435234551.

It is not a de Polignac number, because 15543253453 - 2¹⁷ = 15543122381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15543253483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3795475 + ... + 3799567.

It is an arithmetic number, because the mean of its divisors is an integer number (619012800).

Almost surely, 2^15543253453 is an apocalyptic number.

15543253453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15543253453 is a deficient number, since it is larger than the sum of its proper divisors (4265156147).

15543253453 is a wasteful number, since it uses less digits than its factorization.

15543253453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581.

The product of its digits is 540000, while the sum is 40.

The spelling of 15543253453 in words is "fifteen billion, five hundred forty-three million, two hundred fifty-three thousand, four hundred fifty-three".