2066365544 has 8 divisors (see below), whose sum is σ = 3874435410. Its totient is φ = 1033182768.

The previous prime is 2066365513. The next prime is 2066365579. The reversal of 2066365544 is 4455636602.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1869524644 + 196840900 = 43238^2 + 14030^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2066365544² = 8539733122860831872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129147839 + ... + 129147854.

Almost surely, 2^2066365544 is an apocalyptic number.

It is an amenable number.

2066365544 is a deficient number, since it is larger than the sum of its proper divisors (1808069866).

2066365544 is a wasteful number, since it uses less digits than its factorization.

2066365544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258295699 (or 258295695 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 41.

The square root of 2066365544 is about 45457.2936281957. The cubic root of 2066365544 is about 1273.7055772941.

The spelling of 2066365544 in words is "two billion, sixty-six million, three hundred sixty-five thousand, five hundred forty-four".