16503543437934 has 64 divisors (see below), whose sum is σ = 37790939805696. Its totient is φ = 4706730613344.

The previous prime is 16503543437917. The next prime is 16503543437939. The reversal of 16503543437934 is 43973434530561.

It is a happy number.

It is a super-2 number, since 2×16503543437934² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16503543437939) 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, 250525669 + ... + 250591535.

It is an arithmetic number, because the mean of its divisors is an integer number (590483434464).

Almost surely, 2^{16503543437934} is an apocalyptic number.

16503543437934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16503543437934 is an abundant number, since it is smaller than the sum of its proper divisors (21287396367762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16503543437934 is a wasteful number, since it uses less digits than its factorization.

16503543437934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76629.

The product of its (nonzero) digits is 48988800, while the sum is 57.

The spelling of 16503543437934 in words is "sixteen trillion, five hundred three billion, five hundred forty-three million, four hundred thirty-seven thousand, nine hundred thirty-four".