1118117647161 has 36 divisors (see below), whose sum is σ = 1705856409972. Its totient is φ = 705632435712.

The previous prime is 1118117647139. The next prime is 1118117647189. The reversal of 1118117647161 is 1617467118111.

1118117647161 is a `hidden beast` number, since 1 + 1 + 1 + 8 + 1 + 176 + 471 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1019835397161 + 98282250000 = 1009869^2 + 313500^2 .

It is not a de Polignac number, because 1118117647161 - 2¹⁰ = 1118117646137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1118117647061) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4081285 + ... + 4346621.

It is an arithmetic number, because the mean of its divisors is an integer number (47384900277).

Almost surely, 2^{1118117647161} is an apocalyptic number.

It is an amenable number.

1118117647161 is a deficient number, since it is larger than the sum of its proper divisors (587738762811).

1118117647161 is a wasteful number, since it uses less digits than its factorization.

1118117647161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266678 (or 266656 counting only the distinct ones).

The product of its digits is 56448, while the sum is 45.

The spelling of 1118117647161 in words is "one trillion, one hundred eighteen billion, one hundred seventeen million, six hundred forty-seven thousand, one hundred sixty-one".