2171670220770 has 16 divisors (see below), whose sum is σ = 5212008529920. Its totient is φ = 579112058864.

The previous prime is 2171670220757. The next prime is 2171670220771. The reversal of 2171670220770 is 770220761712.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2171670220771) by changing a digit.

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, 36194503650 + ... + 36194503709.

It is an arithmetic number, because the mean of its divisors is an integer number (325750533120).

Almost surely, 2^{2171670220770} is an apocalyptic number.

2171670220770 is an abundant number, since it is smaller than the sum of its proper divisors (3040338309150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2171670220770 is a wasteful number, since it uses less digits than its factorization.

2171670220770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72389007369.

The product of its (nonzero) digits is 115248, while the sum is 42.

The spelling of 2171670220770 in words is "two trillion, one hundred seventy-one billion, six hundred seventy million, two hundred twenty thousand, seven hundred seventy".