2055664870081 has 27 divisors (see below), whose sum is σ = 2208674320641. Its totient is φ = 1912967138088.

The previous prime is 2055664870073. The next prime is 2055664870121. The reversal of 2055664870081 is 1800784665502.

It is a happy number.

The square root of 2055664870081 is 1433759.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2055664870081 - 2³ = 2055664870073 is a prime.

It is a super-2 number, since 2×2055664870081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2055664870681) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1607243200 + ... + 1607244478.

Almost surely, 2^{2055664870081} is an apocalyptic number.

2055664870081 is the 1433759-th square number.

2055664870081 is the 716880-th centered octagonal number.

It is an amenable number.

2055664870081 is a deficient number, since it is larger than the sum of its proper divisors (153009450560).

2055664870081 is an frugal number, since it uses more digits than its factorization.

2055664870081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 2055664870081 in words is "two trillion, fifty-five billion, six hundred sixty-four million, eight hundred seventy thousand, eighty-one".