1172010245855 has 4 divisors (see below), whose sum is σ = 1406412295032. Its totient is φ = 937608196680.

The previous prime is 1172010245851. The next prime is 1172010245869. The reversal of 1172010245855 is 5585420102711.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1172010245855 - 2² = 1172010245851 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 (1172010245851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117201024581 + ... + 117201024590.

It is an arithmetic number, because the mean of its divisors is an integer number (351603073758).

Almost surely, 2^{1172010245855} is an apocalyptic number.

1172010245855 is a deficient number, since it is larger than the sum of its proper divisors (234402049177).

1172010245855 is an equidigital number, since it uses as much as digits as its factorization.

1172010245855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234402049176.

The product of its (nonzero) digits is 112000, while the sum is 41.

The spelling of 1172010245855 in words is "one trillion, one hundred seventy-two billion, ten million, two hundred forty-five thousand, eight hundred fifty-five".