2640551072 has 48 divisors (see below), whose sum is σ = 5264989632. Its totient is φ = 1303480320.

The previous prime is 2640551071. The next prime is 2640551093. The reversal of 2640551072 is 2701550462.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (2640551071) 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, 1746797 + ... + 1748307.

It is an arithmetic number, because the mean of its divisors is an integer number (109687284).

Almost surely, 2^2640551072 is an apocalyptic number.

It is an amenable number.

2640551072 is a deficient number, since it is larger than the sum of its proper divisors (2624438560).

2640551072 is a wasteful number, since it uses less digits than its factorization.

2640551072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2640551072 is about 51386.2926469696. The cubic root of 2640551072 is about 1382.1808044823.

It can be divided in two parts, 26405 and 51072, that added together give a palindrome (77477).

The spelling of 2640551072 in words is "two billion, six hundred forty million, five hundred fifty-one thousand, seventy-two".