2664806553 has 8 divisors (see below), whose sum is σ = 3947861600. Its totient is φ = 1776537684.

The previous prime is 2664806513. The next prime is 2664806569. The reversal of 2664806553 is 3556084662.

2664806553 is a `hidden beast` number, since 2 + 66 + 480 + 65 + 53 = 666.

It is not a de Polignac number, because 2664806553 - 2¹³ = 2664798361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2664806499 and 2664806508.

It is not an unprimeable number, because it can be changed into a prime (2664806503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49348243 + ... + 49348296.

It is an arithmetic number, because the mean of its divisors is an integer number (493482700).

Almost surely, 2^2664806553 is an apocalyptic number.

It is an amenable number.

2664806553 is a deficient number, since it is larger than the sum of its proper divisors (1283055047).

2664806553 is an equidigital number, since it uses as much as digits as its factorization.

2664806553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98696548 (or 98696542 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The square root of 2664806553 is about 51621.7643344355. The cubic root of 2664806553 is about 1386.4000410064.

The spelling of 2664806553 in words is "two billion, six hundred sixty-four million, eight hundred six thousand, five hundred fifty-three".