1155497549844 has 48 divisors (see below), whose sum is σ = 3003846644736. Its totient is φ = 342700754400.

The previous prime is 1155497549831. The next prime is 1155497549851. The reversal of 1155497549844 is 4489457945511.

It is a super-3 number, since 3×1155497549844³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93119002 + ... + 93131409.

It is an arithmetic number, because the mean of its divisors is an integer number (62580138432).

Almost surely, 2^{1155497549844} is an apocalyptic number.

It is an amenable number.

1155497549844 is an abundant number, since it is smaller than the sum of its proper divisors (1848349094892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155497549844 is a wasteful number, since it uses less digits than its factorization.

1155497549844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186250476 (or 186250474 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 66.

The spelling of 1155497549844 in words is "one trillion, one hundred fifty-five billion, four hundred ninety-seven million, five hundred forty-nine thousand, eight hundred forty-four".