1298856229361 has 2 divisors, whose sum is σ = 1298856229362. Its totient is φ = 1298856229360.

The previous prime is 1298856229337. The next prime is 1298856229399. The reversal of 1298856229361 is 1639226588921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1010788944400 + 288067284961 = 1005380^2 + 536719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1298856229361 - 2¹⁸ = 1298855967217 is a prime.

It is a super-3 number, since 3×1298856229361³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1298856229294 and 1298856229303.

It is not a weakly prime, because it can be changed into another prime (1298856229301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649428114680 + 649428114681.

It is an arithmetic number, because the mean of its divisors is an integer number (649428114681).

Almost surely, 2^{1298856229361} is an apocalyptic number.

It is an amenable number.

1298856229361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298856229361 is an equidigital number, since it uses as much as digits as its factorization.

1298856229361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22394880, while the sum is 62.

The spelling of 1298856229361 in words is "one trillion, two hundred ninety-eight billion, eight hundred fifty-six million, two hundred twenty-nine thousand, three hundred sixty-one".