1275560089669 has 2 divisors, whose sum is σ = 1275560089670. Its totient is φ = 1275560089668.

The previous prime is 1275560089589. The next prime is 1275560089673. The reversal of 1275560089669 is 9669800655721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1035570816900 + 239989272769 = 1017630^2 + 489887^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275560089669 - 2²¹ = 1275557992517 is a prime.

It is a super-2 number, since 2×1275560089669² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1275560089669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275560083669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637780044834 + 637780044835.

It is an arithmetic number, because the mean of its divisors is an integer number (637780044835).

Almost surely, 2^{1275560089669} is an apocalyptic number.

It is an amenable number.

1275560089669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275560089669 is an equidigital number, since it uses as much as digits as its factorization.

1275560089669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 1275560089669 in words is "one trillion, two hundred seventy-five billion, five hundred sixty million, eighty-nine thousand, six hundred sixty-nine".