16650452531 has 4 divisors (see below), whose sum is σ = 16655763432. Its totient is φ = 16645141632.

The previous prime is 16650452471. The next prime is 16650452557. The reversal of 16650452531 is 13525405661.

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

It is a cyclic number.

It is not a de Polignac number, because 16650452531 - 2³⁰ = 15576710707 is a prime.

It is a super-2 number, since 2×16650452531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16650452591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650745 + ... + 2657018.

It is an arithmetic number, because the mean of its divisors is an integer number (4163940858).

Almost surely, 2^16650452531 is an apocalyptic number.

16650452531 is a deficient number, since it is larger than the sum of its proper divisors (5310901).

16650452531 is an equidigital number, since it uses as much as digits as its factorization.

16650452531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310900.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 16650452531 in words is "sixteen billion, six hundred fifty million, four hundred fifty-two thousand, five hundred thirty-one".