1155911883697 has 12 divisors (see below), whose sum is σ = 1225187254980. Its totient is φ = 1090374446592.

The previous prime is 1155911883661. The next prime is 1155911883739. The reversal of 1155911883697 is 7963881195511.

It can be written as a sum of positive squares in 2 ways, for example, as 199973529856 + 955938353841 = 447184^2 + 977721^2 .

It is not a de Polignac number, because 1155911883697 - 2¹⁹ = 1155911359409 is a prime.

It is a super-3 number, since 3×1155911883697³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155911883617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6787072 + ... + 6955297.

It is an arithmetic number, because the mean of its divisors is an integer number (102098937915).

Almost surely, 2^{1155911883697} is an apocalyptic number.

It is an amenable number.

1155911883697 is a deficient number, since it is larger than the sum of its proper divisors (69275371283).

1155911883697 is a wasteful number, since it uses less digits than its factorization.

1155911883697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13742640 (or 13742621 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 64.

The spelling of 1155911883697 in words is "one trillion, one hundred fifty-five billion, nine hundred eleven million, eight hundred eighty-three thousand, six hundred ninety-seven".