2171443461 has 16 divisors (see below), whose sum is σ = 3162189888. Its totient is φ = 1314473600.

The previous prime is 2171443433. The next prime is 2171443511. The reversal of 2171443461 is 1643441712.

It is not a de Polignac number, because 2171443461 - 2⁵ = 2171443429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171443061) 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 15 ways as a sum of consecutive naturals, for example, 10110 + ... + 66671.

It is an arithmetic number, because the mean of its divisors is an integer number (197636868).

Almost surely, 2^2171443461 is an apocalyptic number.

It is an amenable number.

2171443461 is a deficient number, since it is larger than the sum of its proper divisors (990746427).

2171443461 is a wasteful number, since it uses less digits than its factorization.

2171443461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77652.

The product of its digits is 16128, while the sum is 33.

The square root of 2171443461 is about 46598.7495647684. The cubic root of 2171443461 is about 1294.9395898138.

The spelling of 2171443461 in words is "two billion, one hundred seventy-one million, four hundred forty-three thousand, four hundred sixty-one".