2652169515421 has 2 divisors, whose sum is σ = 2652169515422. Its totient is φ = 2652169515420.

The previous prime is 2652169515419. The next prime is 2652169515451. The reversal of 2652169515421 is 1245159612562.

2652169515421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2642123462521 + 10046052900 = 1625461^2 + 100230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2652169515421 - 2¹ = 2652169515419 is a prime.

Together with 2652169515419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2652169515451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1326084757710 + 1326084757711.

It is an arithmetic number, because the mean of its divisors is an integer number (1326084757711).

Almost surely, 2^{2652169515421} is an apocalyptic number.

It is an amenable number.

2652169515421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2652169515421 is an equidigital number, since it uses as much as digits as its factorization.

2652169515421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 49.

The spelling of 2652169515421 in words is "two trillion, six hundred fifty-two billion, one hundred sixty-nine million, five hundred fifteen thousand, four hundred twenty-one".