2170135623 has 8 divisors (see below), whose sum is σ = 2896817008. Its totient is φ = 1445105664.

The previous prime is 2170135621. The next prime is 2170135637. The reversal of 2170135623 is 3265310712.

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

It is not a de Polignac number, because 2170135623 - 2¹ = 2170135621 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 (2170135621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409786 + ... + 415047.

It is an arithmetic number, because the mean of its divisors is an integer number (362102126).

Almost surely, 2^2170135623 is an apocalyptic number.

2170135623 is a deficient number, since it is larger than the sum of its proper divisors (726681385).

2170135623 is an equidigital number, since it uses as much as digits as its factorization.

2170135623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825713.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 2170135623 is about 46584.7144780345. The cubic root of 2170135623 is about 1294.6795613497.

The spelling of 2170135623 in words is "two billion, one hundred seventy million, one hundred thirty-five thousand, six hundred twenty-three".