16503505151 has 4 divisors (see below), whose sum is σ = 18861148752. Its totient is φ = 14145861552.

The previous prime is 16503505111. The next prime is 16503505159. The reversal of 16503505151 is 15150530561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16503505151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16503505159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178821790 + ... + 1178821803.

It is an arithmetic number, because the mean of its divisors is an integer number (4715287188).

Almost surely, 2^16503505151 is an apocalyptic number.

16503505151 is a deficient number, since it is larger than the sum of its proper divisors (2357643601).

16503505151 is an equidigital number, since it uses as much as digits as its factorization.

16503505151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357643600.

The product of its (nonzero) digits is 11250, while the sum is 32.

The spelling of 16503505151 in words is "sixteen billion, five hundred three million, five hundred five thousand, one hundred fifty-one".