2798104698421 has 2 divisors, whose sum is σ = 2798104698422. Its totient is φ = 2798104698420.

The previous prime is 2798104698413. The next prime is 2798104698449. The reversal of 2798104698421 is 1248964018972.

2798104698421 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., 2697523747396 + 100580951025 = 1642414^2 + 317145^2 .

It is a cyclic number.

It is not a de Polignac number, because 2798104698421 - 2³ = 2798104698413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2798104698421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2798104698461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1399052349210 + 1399052349211.

It is an arithmetic number, because the mean of its divisors is an integer number (1399052349211).

Almost surely, 2^{2798104698421} is an apocalyptic number.

It is an amenable number.

2798104698421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2798104698421 is an equidigital number, since it uses as much as digits as its factorization.

2798104698421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 2798104698421 in words is "two trillion, seven hundred ninety-eight billion, one hundred four million, six hundred ninety-eight thousand, four hundred twenty-one".