542250643631 has 2 divisors, whose sum is σ = 542250643632. Its totient is φ = 542250643630.

The previous prime is 542250643609. The next prime is 542250643651. The reversal of 542250643631 is 136346052245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542250643631 - 2¹⁰ = 542250642607 is a prime.

It is a super-2 number, since 2×542250643631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542250643601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271125321815 + 271125321816.

It is an arithmetic number, because the mean of its divisors is an integer number (271125321816).

Almost surely, 2^542250643631 is an apocalyptic number.

542250643631 is a deficient number, since it is larger than the sum of its proper divisors (1).

542250643631 is an equidigital number, since it uses as much as digits as its factorization.

542250643631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 542250643631 its reverse (136346052245), we get a palindrome (678596695876).

The spelling of 542250643631 in words is "five hundred forty-two billion, two hundred fifty million, six hundred forty-three thousand, six hundred thirty-one".