1161673279668 has 144 divisors (see below), whose sum is σ = 3354302654976. Its totient is φ = 348604184160.

The previous prime is 1161673279667. The next prime is 1161673279687. The reversal of 1161673279668 is 8669723761611.

1161673279668 is a `hidden beast` number, since 1 + 1 + 6 + 167 + 327 + 96 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161673279667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 573855 + ... + 1628697.

Almost surely, 2^{1161673279668} is an apocalyptic number.

1161673279668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161673279668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677151327488).

1161673279668 is an abundant number, since it is smaller than the sum of its proper divisors (2192629375308).

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

1161673279668 is a wasteful number, since it uses less digits than its factorization.

1161673279668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054976 (or 1054962 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

It can be divided in two parts, 11616732 and 79668, that added together give a square (11696400 = 3420²).

The spelling of 1161673279668 in words is "one trillion, one hundred sixty-one billion, six hundred seventy-three million, two hundred seventy-nine thousand, six hundred sixty-eight".