2644121260 has 24 divisors (see below), whose sum is σ = 6057441936. Its totient is φ = 961498560.

The previous prime is 2644121251. The next prime is 2644121261. The reversal of 2644121260 is 621214462.

2644121260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2644121261) 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, 6009147 + ... + 6009586.

It is an arithmetic number, because the mean of its divisors is an integer number (252393414).

Almost surely, 2^2644121260 is an apocalyptic number.

2644121260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2644121260 is an abundant number, since it is smaller than the sum of its proper divisors (3413320676).

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

2644121260 is a wasteful number, since it uses less digits than its factorization.

2644121260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12018753 (or 12018751 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2644121260 is about 51421.0196320532. The cubic root of 2644121260 is about 1382.8034551936.

It can be divided in two parts, 2644 and 121260, that added together give a square (123904 = 352²).

The spelling of 2644121260 in words is "two billion, six hundred forty-four million, one hundred twenty-one thousand, two hundred sixty".