1331089266729 has 16 divisors (see below), whose sum is σ = 1790597394432. Its totient is φ = 879487918848.

The previous prime is 1331089266701. The next prime is 1331089266769. The reversal of 1331089266729 is 9276629801331.

It is not a de Polignac number, because 1331089266729 - 2⁸ = 1331089266473 is a prime.

It is a super-2 number, since 2×1331089266729² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1331089266769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6135384 + ... + 6348630.

It is an arithmetic number, because the mean of its divisors is an integer number (111912337152).

Almost surely, 2^{1331089266729} is an apocalyptic number.

It is an amenable number.

1331089266729 is a deficient number, since it is larger than the sum of its proper divisors (459508127703).

1331089266729 is a wasteful number, since it uses less digits than its factorization.

1331089266729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231776.

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 1331089266729 in words is "one trillion, three hundred thirty-one billion, eighty-nine million, two hundred sixty-six thousand, seven hundred twenty-nine".