6402160643 has 4 divisors (see below), whose sum is σ = 6402497328. Its totient is φ = 6401823960.

The previous prime is 6402160613. The next prime is 6402160691. The reversal of 6402160643 is 3460612046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3460612046 = 2 ⋅1730306023.

It is a cyclic number.

It is not a de Polignac number, because 6402160643 - 2³⁰ = 5328418819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6402160603) 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, 137996 + ... + 178457.

It is an arithmetic number, because the mean of its divisors is an integer number (1600624332).

Almost surely, 2^6402160643 is an apocalyptic number.

6402160643 is a deficient number, since it is larger than the sum of its proper divisors (336685).

6402160643 is a wasteful number, since it uses less digits than its factorization.

6402160643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336684.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 6402160643 is about 80013.5028792016. The cubic root of 6402160643 is about 1856.8444436129.

Adding to 6402160643 its reverse (3460612046), we get a palindrome (9862772689).

The spelling of 6402160643 in words is "six billion, four hundred two million, one hundred sixty thousand, six hundred forty-three".