15432543503 has 16 divisors (see below), whose sum is σ = 16756024320. Its totient is φ = 14128906464.

The previous prime is 15432543491. The next prime is 15432543547. The reversal of 15432543503 is 30534523451.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15432543503 - 2⁶ = 15432543439 is a prime.

It is a super-2 number, since 2×15432543503² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15432543803) 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, 1058618 + ... + 1073096.

It is an arithmetic number, because the mean of its divisors is an integer number (1047251520).

Almost surely, 2^15432543503 is an apocalyptic number.

15432543503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15432543503 is a deficient number, since it is larger than the sum of its proper divisors (1323480817).

15432543503 is a wasteful number, since it uses less digits than its factorization.

15432543503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15158.

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 15432543503 in words is "fifteen billion, four hundred thirty-two million, five hundred forty-three thousand, five hundred three".