6340645043 has 4 divisors (see below), whose sum is σ = 6341111040. Its totient is φ = 6340179048.

The previous prime is 6340645033. The next prime is 6340645063. The reversal of 6340645043 is 3405460436.

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

It is a cyclic number.

It is not a de Polignac number, because 6340645043 - 2¹² = 6340640947 is a prime.

It is a super-2 number, since 2×6340645043² = 80407559122640943698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6340644994 and 6340645012.

It is not an unprimeable number, because it can be changed into a prime (6340645033) 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, 211955 + ... + 240012.

It is an arithmetic number, because the mean of its divisors is an integer number (1585277760).

Almost surely, 2^6340645043 is an apocalyptic number.

6340645043 is a deficient number, since it is larger than the sum of its proper divisors (465997).

6340645043 is a wasteful number, since it uses less digits than its factorization.

6340645043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465996.

The product of its (nonzero) digits is 103680, while the sum is 35.

The square root of 6340645043 is about 79628.1673969708. The cubic root of 6340645043 is about 1850.8780874667.

The spelling of 6340645043 in words is "six billion, three hundred forty million, six hundred forty-five thousand, forty-three".