1069266661889 has 4 divisors (see below), whose sum is σ = 1125543854640. Its totient is φ = 1012989469140.

The previous prime is 1069266661847. The next prime is 1069266661909. The reversal of 1069266661889 is 9881666629601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1069266661889 - 2¹² = 1069266657793 is a prime.

It is a super-2 number, since 2×1069266661889² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1069266661189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28138596347 + ... + 28138596384.

It is an arithmetic number, because the mean of its divisors is an integer number (281385963660).

Almost surely, 2^{1069266661889} is an apocalyptic number.

1069266661889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1069266661889 is a deficient number, since it is larger than the sum of its proper divisors (56277192751).

1069266661889 is an equidigital number, since it uses as much as digits as its factorization.

1069266661889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56277192750.

The product of its (nonzero) digits is 80621568, while the sum is 68.

The spelling of 1069266661889 in words is "one trillion, sixty-nine billion, two hundred sixty-six million, six hundred sixty-one thousand, eight hundred eighty-nine".