542366220631 has 4 divisors (see below), whose sum is σ = 548460223200. Its totient is φ = 536272218064.

The previous prime is 542366220629. The next prime is 542366220637. The reversal of 542366220631 is 136022663245.

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

It is a cyclic number.

It is not a de Polignac number, because 542366220631 - 2¹ = 542366220629 is a prime.

It is a super-2 number, since 2×542366220631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542366220637) 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, 3047001151 + ... + 3047001328.

It is an arithmetic number, because the mean of its divisors is an integer number (137115055800).

Almost surely, 2^542366220631 is an apocalyptic number.

542366220631 is a deficient number, since it is larger than the sum of its proper divisors (6094002569).

542366220631 is an equidigital number, since it uses as much as digits as its factorization.

542366220631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6094002568.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 542366220631 its reverse (136022663245), we get a palindrome (678388883876).

The spelling of 542366220631 in words is "five hundred forty-two billion, three hundred sixty-six million, two hundred twenty thousand, six hundred thirty-one".