1295164229561 has 2 divisors, whose sum is σ = 1295164229562. Its totient is φ = 1295164229560.

The previous prime is 1295164229551. The next prime is 1295164229591. The reversal of 1295164229561 is 1659224615921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254050584336 + 41113645225 = 1119844^2 + 202765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1295164229561 - 2¹⁴ = 1295164213177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1295164229501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647582114780 + 647582114781.

It is an arithmetic number, because the mean of its divisors is an integer number (647582114781).

Almost surely, 2^{1295164229561} is an apocalyptic number.

It is an amenable number.

1295164229561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295164229561 is an equidigital number, since it uses as much as digits as its factorization.

1295164229561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 53.

The spelling of 1295164229561 in words is "one trillion, two hundred ninety-five billion, one hundred sixty-four million, two hundred twenty-nine thousand, five hundred sixty-one".