16503747544 has 32 divisors (see below), whose sum is σ = 31020192000. Its totient is φ = 8231728032.

The previous prime is 16503747503. The next prime is 16503747551. The reversal of 16503747544 is 44574730561.

It is a junction number, because it is equal to n+sod(n) for n = 16503747494 and 16503747503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9255277 + ... + 9257059.

It is an arithmetic number, because the mean of its divisors is an integer number (969381000).

Almost surely, 2^16503747544 is an apocalyptic number.

It is an amenable number.

16503747544 is a deficient number, since it is larger than the sum of its proper divisors (14516444456).

16503747544 is a wasteful number, since it uses less digits than its factorization.

16503747544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967 (or 3963 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 16503747544 in words is "sixteen billion, five hundred three million, seven hundred forty-seven thousand, five hundred forty-four".