16206001649 has 4 divisors (see below), whose sum is σ = 16305425136. Its totient is φ = 16106578164.

The previous prime is 16206001631. The next prime is 16206001663. The reversal of 16206001649 is 94610060261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16206001649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16206001249) 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, 49711499 + ... + 49711824.

It is an arithmetic number, because the mean of its divisors is an integer number (4076356284).

Almost surely, 2^16206001649 is an apocalyptic number.

It is an amenable number.

16206001649 is a deficient number, since it is larger than the sum of its proper divisors (99423487).

16206001649 is an equidigital number, since it uses as much as digits as its factorization.

16206001649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99423486.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 16206001649 in words is "sixteen billion, two hundred six million, one thousand, six hundred forty-nine".