42231326251553 has 2 divisors, whose sum is σ = 42231326251554. Its totient is φ = 42231326251552.

The previous prime is 42231326251549. The next prime is 42231326251567. The reversal of 42231326251553 is 35515262313224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30950440409344 + 11280885842209 = 5563312^2 + 3358703^2 .

It is a cyclic number.

It is not a de Polignac number, because 42231326251553 - 2² = 42231326251549 is a prime.

It is not a weakly prime, because it can be changed into another prime (42231326251253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21115663125776 + 21115663125777.

It is an arithmetic number, because the mean of its divisors is an integer number (21115663125777).

Almost surely, 2^{42231326251553} is an apocalyptic number.

It is an amenable number.

42231326251553 is a deficient number, since it is larger than the sum of its proper divisors (1).

42231326251553 is an equidigital number, since it uses as much as digits as its factorization.

42231326251553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296000, while the sum is 44.

Adding to 42231326251553 its reverse (35515262313224), we get a palindrome (77746588564777).

The spelling of 42231326251553 in words is "forty-two trillion, two hundred thirty-one billion, three hundred twenty-six million, two hundred fifty-one thousand, five hundred fifty-three".