1131660441045 has 24 divisors (see below), whose sum is σ = 1981766883096. Its totient is φ = 597330044928.

The previous prime is 1131660441007. The next prime is 1131660441113. The reversal of 1131660441045 is 5401440661311.

1131660441045 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 6 + 604 + 4 + 1 + 0 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 61794999396 + 1069865441649 = 248586^2 + 1034343^2 .

It is not a de Polignac number, because 1131660441045 - 2¹⁶ = 1131660375509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129624552 + ... + 129633281.

It is an arithmetic number, because the mean of its divisors is an integer number (82573620129).

Almost surely, 2^{1131660441045} is an apocalyptic number.

1131660441045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131660441045 is a deficient number, since it is larger than the sum of its proper divisors (850106442051).

1131660441045 is a wasteful number, since it uses less digits than its factorization.

1131660441045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259257941 (or 259257938 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 1131660441045 in words is "one trillion, one hundred thirty-one billion, six hundred sixty million, four hundred forty-one thousand, forty-five".