2520641729 has 2 divisors, whose sum is σ = 2520641730. Its totient is φ = 2520641728.

The previous prime is 2520641611. The next prime is 2520641743. The reversal of 2520641729 is 9271460252.

2520641729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2460160000 + 60481729 = 49600^2 + 7777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2520641729 is a prime.

It is a super-2 number, since 2×2520641729² = 12707269451952218882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2520641692 and 2520641701.

It is not a weakly prime, because it can be changed into another prime (2520641759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260320864 + 1260320865.

It is an arithmetic number, because the mean of its divisors is an integer number (1260320865).

Almost surely, 2^2520641729 is an apocalyptic number.

It is an amenable number.

2520641729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520641729 is an equidigital number, since it uses as much as digits as its factorization.

2520641729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2520641729 is about 50205.9929590084. The cubic root of 2520641729 is about 1360.9339261706.

The spelling of 2520641729 in words is "two billion, five hundred twenty million, six hundred forty-one thousand, seven hundred twenty-nine".