16432634364544 has 64 divisors (see below), whose sum is σ = 33139557091080. Its totient is φ = 8115641856000.

The previous prime is 16432634364541. The next prime is 16432634364547. The reversal of 16432634364544 is 44546343623461.

It is an interprime number because it is at equal distance from previous prime (16432634364541) and next prime (16432634364547).

It can be written as a sum of positive squares in 4 ways, for example, as 11864497582144 + 4568136782400 = 3444488^2 + 2137320^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×16432634364544³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16432634364541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3933082 + ... + 6952294.

Almost surely, 2^{16432634364544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16432634364544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16569778545540).

16432634364544 is an abundant number, since it is smaller than the sum of its proper divisors (16706922726536).

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

16432634364544 is a wasteful number, since it uses less digits than its factorization.

16432634364544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019749 (or 3019737 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 55.

The spelling of 16432634364544 in words is "sixteen trillion, four hundred thirty-two billion, six hundred thirty-four million, three hundred sixty-four thousand, five hundred forty-four".