7872466543643 has 4 divisors (see below), whose sum is σ = 8478040893168. Its totient is φ = 7266892194120.

The previous prime is 7872466543609. The next prime is 7872466543673. The reversal of 7872466543643 is 3463456642787.

It is a happy number.

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

It is not a de Polignac number, because 7872466543643 - 2¹⁸ = 7872466281499 is a prime.

It is a super-2 number, since 2×7872466543643² (a number of 27 digits) contains 22 as substring.

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 7872466543643.

It is not an unprimeable number, because it can be changed into a prime (7872466543673) 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, 302787174743 + ... + 302787174768.

It is an arithmetic number, because the mean of its divisors is an integer number (2119510223292).

Almost surely, 2^{7872466543643} is an apocalyptic number.

7872466543643 is a deficient number, since it is larger than the sum of its proper divisors (605574349525).

7872466543643 is a wasteful number, since it uses less digits than its factorization.

7872466543643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605574349524.

The product of its digits is 487710720, while the sum is 65.

The spelling of 7872466543643 in words is "seven trillion, eight hundred seventy-two billion, four hundred sixty-six million, five hundred forty-three thousand, six hundred forty-three".