1177727823018 has 48 divisors (see below), whose sum is σ = 2640150157320. Its totient is φ = 378979195392.

The previous prime is 1177727822941. The next prime is 1177727823071. The reversal of 1177727823018 is 8103287277711.

It can be written as a sum of positive squares in 4 ways, for example, as 1106276929209 + 71450893809 = 1051797^2 + 267303^2 .

It is a super-2 number, since 2×1177727823018² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3204630 + ... + 3553182.

Almost surely, 2^{1177727823018} is an apocalyptic number.

1177727823018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1177727823018 is an abundant number, since it is smaller than the sum of its proper divisors (1462422334302).

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

1177727823018 is a wasteful number, since it uses less digits than its factorization.

1177727823018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355063 (or 355060 counting only the distinct ones).

The product of its (nonzero) digits is 1843968, while the sum is 54.

The spelling of 1177727823018 in words is "one trillion, one hundred seventy-seven billion, seven hundred twenty-seven million, eight hundred twenty-three thousand, eighteen".