16453045657 has 4 divisors (see below), whose sum is σ = 16603991140. Its totient is φ = 16302100176.

The previous prime is 16453045603. The next prime is 16453045663. The reversal of 16453045657 is 75654035461.

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 3706861456 + 12746184201 = 60884^2 + 112899^2 .

It is a cyclic number.

It is not a de Polignac number, because 16453045657 - 2¹⁵ = 16453012889 is a prime.

It is a super-2 number, since 2×16453045657² (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 (16453045157) 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, 75472578 + ... + 75472795.

It is an arithmetic number, because the mean of its divisors is an integer number (4150997785).

Almost surely, 2^16453045657 is an apocalyptic number.

It is an amenable number.

16453045657 is a deficient number, since it is larger than the sum of its proper divisors (150945483).

16453045657 is a wasteful number, since it uses less digits than its factorization.

16453045657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150945482.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 16453045657 in words is "sixteen billion, four hundred fifty-three million, forty-five thousand, six hundred fifty-seven".