2066144872 has 32 divisors (see below), whose sum is σ = 4285742400. Its totient is φ = 925926400.

The previous prime is 2066144867. The next prime is 2066144887. The reversal of 2066144872 is 2784416602.

It is a happy number.

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, 159097 + ... + 171592.

It is an arithmetic number, because the mean of its divisors is an integer number (133929450).

Almost surely, 2^2066144872 is an apocalyptic number.

2066144872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2066144872 is an abundant number, since it is smaller than the sum of its proper divisors (2219597528).

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

2066144872 is a wasteful number, since it uses less digits than its factorization.

2066144872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330777 (or 330773 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 2066144872 is about 45454.8663181402. The cubic root of 2066144872 is about 1273.6602350160.

The spelling of 2066144872 in words is "two billion, sixty-six million, one hundred forty-four thousand, eight hundred seventy-two".