16944513540 has 48 divisors (see below), whose sum is σ = 49507452288. Its totient is φ = 4322078464.

The previous prime is 16944513499. The next prime is 16944513569. The reversal of 16944513540 is 4531544961.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16944513492 and 16944513501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6137937 + ... + 6140696.

It is an arithmetic number, because the mean of its divisors is an integer number (1031405256).

Almost surely, 2^16944513540 is an apocalyptic number.

16944513540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16944513540 is an abundant number, since it is smaller than the sum of its proper divisors (32562938748).

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

16944513540 is a wasteful number, since it uses less digits than its factorization.

16944513540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12278668 (or 12278666 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 16944513540 in words is "sixteen billion, nine hundred forty-four million, five hundred thirteen thousand, five hundred forty".