1155497549845 has 16 divisors (see below), whose sum is σ = 1397002408128. Its totient is φ = 917463888000.

The previous prime is 1155497549831. The next prime is 1155497549851. The reversal of 1155497549845 is 5489457945511.

It is not a de Polignac number, because 1155497549845 - 2²¹ = 1155495452693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3246970 + ... + 3585220.

It is an arithmetic number, because the mean of its divisors is an integer number (87312650508).

Almost surely, 2^{1155497549845} is an apocalyptic number.

It is an amenable number.

1155497549845 is a deficient number, since it is larger than the sum of its proper divisors (241504858283).

1155497549845 is a wasteful number, since it uses less digits than its factorization.

1155497549845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343380.

The product of its digits is 181440000, while the sum is 67.

The spelling of 1155497549845 in words is "one trillion, one hundred fifty-five billion, four hundred ninety-seven million, five hundred forty-nine thousand, eight hundred forty-five".