542215664624 has 20 divisors (see below), whose sum is σ = 1050938022120. Its totient is φ = 271005852480.

The previous prime is 542215664623. The next prime is 542215664647. The reversal of 542215664624 is 426466512245.

It is a happy number.

It is a super-2 number, since 2×542215664624² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542215664623) 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, 6329867 + ... + 6414954.

It is an arithmetic number, because the mean of its divisors is an integer number (52546901106).

Almost surely, 2^542215664624 is an apocalyptic number.

It is an amenable number.

542215664624 is a deficient number, since it is larger than the sum of its proper divisors (508722357496).

542215664624 is a wasteful number, since it uses less digits than its factorization.

542215664624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12747488 (or 12747482 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 47.

The spelling of 542215664624 in words is "five hundred forty-two billion, two hundred fifteen million, six hundred sixty-four thousand, six hundred twenty-four".