6542220222456 has 32 divisors (see below), whose sum is σ = 16358095760640. Its totient is φ = 2180400713568.

The previous prime is 6542220222409. The next prime is 6542220222457.

6542220222456 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6542220222456² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542220222457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21052576 + ... + 21361071.

It is an arithmetic number, because the mean of its divisors is an integer number (511190492520).

Almost surely, 2^{6542220222456} is an apocalyptic number.

It is an amenable number.

6542220222456 is an abundant number, since it is smaller than the sum of its proper divisors (9815875538184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6542220222456 is a wasteful number, since it uses less digits than its factorization.

6542220222456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42420083 (or 42420079 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 42.

It can be divided in two parts, 6542220 and 222456, that added together give a palindrome (6764676).

The spelling of 6542220222456 in words is "six trillion, five hundred forty-two billion, two hundred twenty million, two hundred twenty-two thousand, four hundred fifty-six".