16537657923 has 16 divisors (see below), whose sum is σ = 24610109440. Its totient is φ = 10975661352.

The previous prime is 16537657879. The next prime is 16537657937. The reversal of 16537657923 is 32975673561.

16537657923 is a `hidden beast` number, since 1 + 65 + 3 + 7 + 6 + 579 + 2 + 3 = 666.

16537657923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16537657923 - 2⁶ = 16537657859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16537657923.

It is not an unprimeable number, because it can be changed into a prime (16537697923) 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 15 ways as a sum of consecutive naturals, for example, 1367311 + ... + 1379352.

It is an arithmetic number, because the mean of its divisors is an integer number (1538131840).

Almost surely, 2^16537657923 is an apocalyptic number.

16537657923 is a deficient number, since it is larger than the sum of its proper divisors (8072451517).

16537657923 is a wasteful number, since it uses less digits than its factorization.

16537657923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746895 (or 2746889 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 54.

The spelling of 16537657923 in words is "sixteen billion, five hundred thirty-seven million, six hundred fifty-seven thousand, nine hundred twenty-three".