2729002721 has 2 divisors, whose sum is σ = 2729002722. Its totient is φ = 2729002720.

The previous prime is 2729002691. The next prime is 2729002751. The reversal of 2729002721 is 1272009272.

It is a balanced prime because it is at equal distance from previous prime (2729002691) and next prime (2729002751).

It can be written as a sum of positive squares in only one way, i.e., 2319385600 + 409617121 = 48160^2 + 20239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2729002721 - 2⁶ = 2729002657 is a prime.

It is not a weakly prime, because it can be changed into another prime (2729002751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364501360 + 1364501361.

It is an arithmetic number, because the mean of its divisors is an integer number (1364501361).

Almost surely, 2^2729002721 is an apocalyptic number.

It is an amenable number.

2729002721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2729002721 is an equidigital number, since it uses as much as digits as its factorization.

2729002721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 2729002721 is about 52239.8575897753. The cubic root of 2729002721 is about 1397.4447815117. Note that the first 3 decimals are identical.

The spelling of 2729002721 in words is "two billion, seven hundred twenty-nine million, two thousand, seven hundred twenty-one".