16530962257 has 4 divisors (see below), whose sum is σ = 17064219136. Its totient is φ = 15997705380.

The previous prime is 16530962243. The next prime is 16530962263. The reversal of 16530962257 is 75226903561.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75226903561 = 103 ⋅730358287.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16530962257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16530962057) 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, 266628393 + ... + 266628454.

It is an arithmetic number, because the mean of its divisors is an integer number (4266054784).

Almost surely, 2^16530962257 is an apocalyptic number.

It is an amenable number.

16530962257 is a deficient number, since it is larger than the sum of its proper divisors (533256879).

16530962257 is an equidigital number, since it uses as much as digits as its factorization.

16530962257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533256878.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 16530962257 in words is "sixteen billion, five hundred thirty million, nine hundred sixty-two thousand, two hundred fifty-seven".