2722721104489 has 9 divisors (see below), whose sum is σ = 2751241501431. Its totient is φ = 2694493408320.

The previous prime is 2722721104469. The next prime is 2722721104501. The reversal of 2722721104489 is 9844011272272.

It is a happy number.

The square root of 2722721104489 is 1650067.

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

It can be written as a sum of positive squares in only one way, i.e., 1222605661225 + 1500115443264 = 1105715^2 + 1224792^2 .

It is not a de Polignac number, because 2722721104489 - 2¹⁷ = 2722720973417 is a prime.

It is a super-2 number, since 2×2722721104489² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2722721104429) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 160047994 + ... + 160065004.

It is an arithmetic number, because the mean of its divisors is an integer number (305693500159).

Almost surely, 2^{2722721104489} is an apocalyptic number.

2722721104489 is the 1650067-th square number.

2722721104489 is the 825034-th centered octagonal number.

It is an amenable number.

2722721104489 is a deficient number, since it is larger than the sum of its proper divisors (28520396942).

2722721104489 is an frugal number, since it uses more digits than its factorization.

2722721104489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34216 (or 17108 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

Multiplying 2722721104489 by its sum of digits (49), we get a square (133413334119961 = 11550469²).

The spelling of 2722721104489 in words is "two trillion, seven hundred twenty-two billion, seven hundred twenty-one million, one hundred four thousand, four hundred eighty-nine".