2171046660 has 24 divisors (see below), whose sum is σ = 6078930816. Its totient is φ = 578945760.

The previous prime is 2171046649. The next prime is 2171046671. The reversal of 2171046660 is 666401712.

It is an interprime number because it is at equal distance from previous prime (2171046649) and next prime (2171046671).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18091996 + ... + 18092115.

It is an arithmetic number, because the mean of its divisors is an integer number (253288784).

Almost surely, 2^2171046660 is an apocalyptic number.

2171046660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171046660 is an abundant number, since it is smaller than the sum of its proper divisors (3907884156).

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

2171046660 is a wasteful number, since it uses less digits than its factorization.

2171046660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36184123 (or 36184121 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2171046660 is about 46594.4917345388. The cubic root of 2171046660 is about 1294.8607076270.

The spelling of 2171046660 in words is "two billion, one hundred seventy-one million, forty-six thousand, six hundred sixty".