16145411257 has 4 divisors (see below), whose sum is σ = 16305266916. Its totient is φ = 15985555600.

The previous prime is 16145411237. The next prime is 16145411267. The reversal of 16145411257 is 75211454161.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14319472896 + 1825938361 = 119664^2 + 42731^2 .

It is a cyclic number.

It is not a de Polignac number, because 16145411257 - 2¹¹ = 16145409209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16145411237) 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, 79927678 + ... + 79927879.

It is an arithmetic number, because the mean of its divisors is an integer number (4076316729).

Almost surely, 2^16145411257 is an apocalyptic number.

It is an amenable number.

16145411257 is a deficient number, since it is larger than the sum of its proper divisors (159855659).

16145411257 is a wasteful number, since it uses less digits than its factorization.

16145411257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159855658.

The product of its digits is 33600, while the sum is 37.

The spelling of 16145411257 in words is "sixteen billion, one hundred forty-five million, four hundred eleven thousand, two hundred fifty-seven".