1289123841253 has 16 divisors (see below), whose sum is σ = 1312846479360. Its totient is φ = 1265592135600.

The previous prime is 1289123841241. The next prime is 1289123841277. The reversal of 1289123841253 is 3521483219821.

It is a cyclic number.

It is not a de Polignac number, because 1289123841253 - 2²¹ = 1289121744101 is a prime.

It is a super-2 number, since 2×1289123841253² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1289123841197 and 1289123841206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289123841223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37207248 + ... + 37241878.

It is an arithmetic number, because the mean of its divisors is an integer number (82052904960).

Almost surely, 2^{1289123841253} is an apocalyptic number.

It is an amenable number.

1289123841253 is a deficient number, since it is larger than the sum of its proper divisors (23722638107).

1289123841253 is a wasteful number, since it uses less digits than its factorization.

1289123841253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37368.

The product of its digits is 829440, while the sum is 49.

The spelling of 1289123841253 in words is "one trillion, two hundred eighty-nine billion, one hundred twenty-three million, eight hundred forty-one thousand, two hundred fifty-three".