19046879515361 has 2 divisors, whose sum is σ = 19046879515362. Its totient is φ = 19046879515360.

The previous prime is 19046879515343. The next prime is 19046879515523. The reversal of 19046879515361 is 16351597864091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13786480390225 + 5260399125136 = 3713015^2 + 2293556^2 .

It is a cyclic number.

It is not a de Polignac number, because 19046879515361 - 2⁶ = 19046879515297 is a prime.

It is not a weakly prime, because it can be changed into another prime (19046879515561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9523439757680 + 9523439757681.

It is an arithmetic number, because the mean of its divisors is an integer number (9523439757681).

Almost surely, 2^{19046879515361} is an apocalyptic number.

It is an amenable number.

19046879515361 is a deficient number, since it is larger than the sum of its proper divisors (1).

19046879515361 is an equidigital number, since it uses as much as digits as its factorization.

19046879515361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48988800, while the sum is 65.

The spelling of 19046879515361 in words is "nineteen trillion, forty-six billion, eight hundred seventy-nine million, five hundred fifteen thousand, three hundred sixty-one".