16451750538 has 16 divisors (see below), whose sum is σ = 36559445760. Its totient is φ = 5483916828.

The previous prime is 16451750531. The next prime is 16451750611. The reversal of 16451750538 is 83505715461.

16451750538 is a `hidden beast` number, since 1 + 6 + 45 + 1 + 75 + 0 + 538 = 666.

16451750538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16451750493 and 16451750502.

It is not an unprimeable number, because it can be changed into a prime (16451750531) 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, 152330970 + ... + 152331077.

It is an arithmetic number, because the mean of its divisors is an integer number (2284965360).

Almost surely, 2^16451750538 is an apocalyptic number.

16451750538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16451750538 is an abundant number, since it is smaller than the sum of its proper divisors (20107695222).

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

16451750538 is a wasteful number, since it uses less digits than its factorization.

16451750538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304662058 (or 304662052 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 16451750538 in words is "sixteen billion, four hundred fifty-one million, seven hundred fifty thousand, five hundred thirty-eight".