1166204061135 has 32 divisors (see below), whose sum is σ = 2073659328960. Its totient is φ = 621853200000.

The previous prime is 1166204061119. The next prime is 1166204061151. The reversal of 1166204061135 is 5311604026611.

1166204061135 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 2 + 0 + 4 + 0 + 611 + 35 = 666.

It is an interprime number because it is at equal distance from previous prime (1166204061119) and next prime (1166204061151).

It is not a de Polignac number, because 1166204061135 - 2⁴ = 1166204061119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1166204061135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158116 + ... + 1535385.

It is an arithmetic number, because the mean of its divisors is an integer number (64801854030).

Almost surely, 2^{1166204061135} is an apocalyptic number.

1166204061135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166204061135 is a deficient number, since it is larger than the sum of its proper divisors (907455267825).

1166204061135 is a wasteful number, since it uses less digits than its factorization.

1166204061135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698616 (or 1698610 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 1166204061135 its reverse (5311604026611), we get a palindrome (6477808087746).

The spelling of 1166204061135 in words is "one trillion, one hundred sixty-six billion, two hundred four million, sixty-one thousand, one hundred thirty-five".