6542223343855 has 8 divisors (see below), whose sum is σ = 8103915368064. Its totient is φ = 5064947104800.

The previous prime is 6542223343837. The next prime is 6542223343891. The reversal of 6542223343855 is 5583433222456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6542223343855 - 2⁹ = 6542223343343 is a prime.

It is a super-2 number, since 2×6542223343855² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21103946116 + ... + 21103946425.

It is an arithmetic number, because the mean of its divisors is an integer number (1012989421008).

Almost surely, 2^{6542223343855} is an apocalyptic number.

6542223343855 is a deficient number, since it is larger than the sum of its proper divisors (1561692024209).

6542223343855 is a wasteful number, since it uses less digits than its factorization.

6542223343855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42207892577.

The product of its digits is 20736000, while the sum is 52.

The spelling of 6542223343855 in words is "six trillion, five hundred forty-two billion, two hundred twenty-three million, three hundred forty-three thousand, eight hundred fifty-five".