168052270657 has 4 divisors (see below), whose sum is σ = 172594223956. Its totient is φ = 163510317360.

The previous prime is 168052270651. The next prime is 168052270667. The reversal of 168052270657 is 756072250861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 756072250861 = 257 ⋅2941915373.

It can be written as a sum of positive squares in 2 ways, for example, as 163473853761 + 4578416896 = 404319^2 + 67664^2 .

It is a cyclic number.

It is not a de Polignac number, because 168052270657 - 2¹¹ = 168052268609 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 168052270657.

It is not an unprimeable number, because it can be changed into a prime (168052270651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2270976594 + ... + 2270976667.

It is an arithmetic number, because the mean of its divisors is an integer number (43148555989).

Almost surely, 2^168052270657 is an apocalyptic number.

It is an amenable number.

168052270657 is a deficient number, since it is larger than the sum of its proper divisors (4541953299).

168052270657 is an equidigital number, since it uses as much as digits as its factorization.

168052270657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541953298.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 168052270657 in words is "one hundred sixty-eight billion, fifty-two million, two hundred seventy thousand, six hundred fifty-seven".