16431126540 has 96 divisors (see below), whose sum is σ = 48063891456. Its totient is φ = 4189163520.

The previous prime is 16431126499. The next prime is 16431126541. The reversal of 16431126540 is 4562113461.

16431126540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16431126541) 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 31 ways as a sum of consecutive naturals, for example, 101164 + ... + 207596.

It is an arithmetic number, because the mean of its divisors is an integer number (500665536).

Almost surely, 2^16431126540 is an apocalyptic number.

16431126540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16431126540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24031945728).

16431126540 is an abundant number, since it is smaller than the sum of its proper divisors (31632764916).

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

16431126540 is a wasteful number, since it uses less digits than its factorization.

16431126540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106559 (or 106557 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 16431126540 in words is "sixteen billion, four hundred thirty-one million, one hundred twenty-six thousand, five hundred forty".