2055718665 has 192 divisors, whose sum is σ = 4891041792. Its totient is φ = 771033600.

The previous prime is 2055718657. The next prime is 2055718667. The reversal of 2055718665 is 5668175502.

2055718665 is a `hidden beast` number, since 20 + 557 + 18 + 6 + 65 = 666.

2055718665 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2055718665 - 2³ = 2055718657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2055718665.

It is not an unprimeable number, because it can be changed into a prime (2055718667) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2116630 + ... + 2117600.

It is an arithmetic number, because the mean of its divisors is an integer number (25474176).

Almost surely, 2^2055718665 is an apocalyptic number.

It is an amenable number.

2055718665 is an abundant number, since it is smaller than the sum of its proper divisors (2835323127).

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

2055718665 is a wasteful number, since it uses less digits than its factorization.

2055718665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The square root of 2055718665 is about 45340.0338001638. The cubic root of 2055718665 is about 1271.5142343104.

The spelling of 2055718665 in words is "two billion, fifty-five million, seven hundred eighteen thousand, six hundred sixty-five".