536423531561 has 2 divisors, whose sum is σ = 536423531562. Its totient is φ = 536423531560.

The previous prime is 536423531513. The next prime is 536423531573. The reversal of 536423531561 is 165135324635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 468129640000 + 68293891561 = 684200^2 + 261331^2 .

It is a cyclic number.

It is not a de Polignac number, because 536423531561 - 2¹⁰ = 536423530537 is a prime.

It is not a weakly prime, because it can be changed into another prime (536423531591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268211765780 + 268211765781.

It is an arithmetic number, because the mean of its divisors is an integer number (268211765781).

Almost surely, 2^536423531561 is an apocalyptic number.

It is an amenable number.

536423531561 is a deficient number, since it is larger than the sum of its proper divisors (1).

536423531561 is an equidigital number, since it uses as much as digits as its factorization.

536423531561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 44.

The spelling of 536423531561 in words is "five hundred thirty-six billion, four hundred twenty-three million, five hundred thirty-one thousand, five hundred sixty-one".