1155032431985 has 8 divisors (see below), whose sum is σ = 1388016153576. Its totient is φ = 922707788800.

The previous prime is 1155032431963. The next prime is 1155032431991. The reversal of 1155032431985 is 5891342305511.

It can be written as a sum of positive squares in 4 ways, for example, as 39423293809 + 1115609138176 = 198553^2 + 1056224^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1155032431985 - 2¹⁴ = 1155032415601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164765744 + ... + 164772753.

It is an arithmetic number, because the mean of its divisors is an integer number (173502019197).

Almost surely, 2^{1155032431985} is an apocalyptic number.

It is an amenable number.

1155032431985 is a deficient number, since it is larger than the sum of its proper divisors (232983721591).

1155032431985 is an equidigital number, since it uses as much as digits as its factorization.

1155032431985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329539203.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 1155032431985 in words is "one trillion, one hundred fifty-five billion, thirty-two million, four hundred thirty-one thousand, nine hundred eighty-five".