1181047620085 has 8 divisors (see below), whose sum is σ = 1417498168536. Its totient is φ = 944677413120.

The previous prime is 1181047620059. The next prime is 1181047620097. The reversal of 1181047620085 is 5800267401811.

It can be written as a sum of positive squares in 4 ways, for example, as 345077529489 + 835970090596 = 587433^2 + 914314^2 .

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

It is not a de Polignac number, because 1181047620085 - 2¹³ = 1181047611893 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 20053024 + ... + 20111833.

It is an arithmetic number, because the mean of its divisors is an integer number (177187271067).

Almost surely, 2^{1181047620085} is an apocalyptic number.

It is an amenable number.

1181047620085 is a deficient number, since it is larger than the sum of its proper divisors (236450548451).

1181047620085 is an equidigital number, since it uses as much as digits as its factorization.

1181047620085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40170743.

The product of its (nonzero) digits is 107520, while the sum is 43.

The spelling of 1181047620085 in words is "one trillion, one hundred eighty-one billion, forty-seven million, six hundred twenty thousand, eighty-five".