542663520631 has 4 divisors (see below), whose sum is σ = 549532679200. Its totient is φ = 535794362064.

The previous prime is 542663520563. The next prime is 542663520649. The reversal of 542663520631 is 136025366245.

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 542663520631 - 2¹³ = 542663512439 is a prime.

It is a super-2 number, since 2×542663520631² (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 (542663520671) 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, 3434579166 + ... + 3434579323.

It is an arithmetic number, because the mean of its divisors is an integer number (137383169800).

Almost surely, 2^542663520631 is an apocalyptic number.

542663520631 is a deficient number, since it is larger than the sum of its proper divisors (6869158569).

542663520631 is an equidigital number, since it uses as much as digits as its factorization.

542663520631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6869158568.

The product of its (nonzero) digits is 777600, while the sum is 43.

Adding to 542663520631 its reverse (136025366245), we get a palindrome (678688886876).

The spelling of 542663520631 in words is "five hundred forty-two billion, six hundred sixty-three million, five hundred twenty thousand, six hundred thirty-one".