16127500457 has 4 divisors (see below), whose sum is σ = 16136517060. Its totient is φ = 16118483856.

The previous prime is 16127500423. The next prime is 16127500469. The reversal of 16127500457 is 75400572161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75400572161 = 11489 ⋅6562849.

It can be written as a sum of positive squares in 2 ways, for example, as 15830420761 + 297079696 = 125819^2 + 17236^2 .

It is a cyclic number.

It is not a de Polignac number, because 16127500457 - 2¹² = 16127496361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16127500457.

It is not an unprimeable number, because it can be changed into a prime (16127500657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4505618 + ... + 4509195.

It is an arithmetic number, because the mean of its divisors is an integer number (4034129265).

Almost surely, 2^16127500457 is an apocalyptic number.

It is an amenable number.

16127500457 is a deficient number, since it is larger than the sum of its proper divisors (9016603).

16127500457 is an equidigital number, since it uses as much as digits as its factorization.

16127500457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9016602.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 16127500457 in words is "sixteen billion, one hundred twenty-seven million, five hundred thousand, four hundred fifty-seven".