1155089712001 has 3 divisors (see below), whose sum is σ = 1155090786753. Its totient is φ = 1155088637250.

The previous prime is 1155089711917. The next prime is 1155089712019. The reversal of 1155089712001 is 1002179805511.

The square root of 1155089712001 is 1074751.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1155089712001 - 2²³ = 1155081323393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155089712061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 537376 + ... + 1612126.

It is an arithmetic number, because the mean of its divisors is an integer number (385030262251).

Almost surely, 2^{1155089712001} is an apocalyptic number.

1155089712001 is the 1074751-st square number.

1155089712001 is the 537376-th centered octagonal number.

It is an amenable number.

1155089712001 is a deficient number, since it is larger than the sum of its proper divisors (1074752).

1155089712001 is an frugal number, since it uses more digits than its factorization.

1155089712001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149502 (or 1074751 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 40.

The spelling of 1155089712001 in words is "one trillion, one hundred fifty-five billion, eighty-nine million, seven hundred twelve thousand, one".