536560431221 has 2 divisors, whose sum is σ = 536560431222. Its totient is φ = 536560431220.

The previous prime is 536560431191. The next prime is 536560431229. The reversal of 536560431221 is 122134065635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458479306321 + 78081124900 = 677111^2 + 279430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-536560431221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (536560431229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268280215610 + 268280215611.

It is an arithmetic number, because the mean of its divisors is an integer number (268280215611).

Almost surely, 2^536560431221 is an apocalyptic number.

It is an amenable number.

536560431221 is a deficient number, since it is larger than the sum of its proper divisors (1).

536560431221 is an equidigital number, since it uses as much as digits as its factorization.

536560431221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 536560431221 its reverse (122134065635), we get a palindrome (658694496856).

The spelling of 536560431221 in words is "five hundred thirty-six billion, five hundred sixty million, four hundred thirty-one thousand, two hundred twenty-one".