1161855812327 has 8 divisors (see below), whose sum is σ = 1327982708736. Its totient is φ = 995765789592.

The previous prime is 1161855812279. The next prime is 1161855812339. The reversal of 1161855812327 is 7232185581611.

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

It is not a de Polignac number, because 1161855812327 - 2⁸ = 1161855812071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161855812357) 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, 9150863 + ... + 9276960.

It is an arithmetic number, because the mean of its divisors is an integer number (165997838592).

Almost surely, 2^{1161855812327} is an apocalyptic number.

1161855812327 is a deficient number, since it is larger than the sum of its proper divisors (166126896409).

1161855812327 is an equidigital number, since it uses as much as digits as its factorization.

1161855812327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18436837.

The product of its digits is 806400, while the sum is 50.

The spelling of 1161855812327 in words is "one trillion, one hundred sixty-one billion, eight hundred fifty-five million, eight hundred twelve thousand, three hundred twenty-seven".