1166781380367 has 8 divisors (see below), whose sum is σ = 1556001892224. Its totient is φ = 777707561048.

The previous prime is 1166781380339. The next prime is 1166781380371. The reversal of 1166781380367 is 7630831876611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166781380367 - 2²³ = 1166772991759 is a prime.

It is a super-2 number, since 2×1166781380367² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166781380377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36654573 + ... + 36686390.

It is an arithmetic number, because the mean of its divisors is an integer number (194500236528).

Almost surely, 2^{1166781380367} is an apocalyptic number.

1166781380367 is a deficient number, since it is larger than the sum of its proper divisors (389220511857).

1166781380367 is an equidigital number, since it uses as much as digits as its factorization.

1166781380367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73346269.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 1166781380367 in words is "one trillion, one hundred sixty-six billion, seven hundred eighty-one million, three hundred eighty thousand, three hundred sixty-seven".