6415277421643 has 4 divisors (see below), whose sum is σ = 6415335230920. Its totient is φ = 6415219612368.

The previous prime is 6415277421589. The next prime is 6415277421673. The reversal of 6415277421643 is 3461247725146.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6415277421643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6415277421673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28737858 + ... + 28960231.

It is an arithmetic number, because the mean of its divisors is an integer number (1603833807730).

Almost surely, 2^{6415277421643} is an apocalyptic number.

6415277421643 is a deficient number, since it is larger than the sum of its proper divisors (57809277).

6415277421643 is a wasteful number, since it uses less digits than its factorization.

6415277421643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57809276.

The product of its digits is 6773760, while the sum is 52.

The spelling of 6415277421643 in words is "six trillion, four hundred fifteen billion, two hundred seventy-seven million, four hundred twenty-one thousand, six hundred forty-three".