1289130252645 has 8 divisors (see below), whose sum is σ = 2062608404256. Its totient is φ = 687536134736.

The previous prime is 1289130252643. The next prime is 1289130252647. The reversal of 1289130252645 is 5462520319821.

It is an interprime number because it is at equal distance from previous prime (1289130252643) and next prime (1289130252647).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1289130252645 - 2¹ = 1289130252643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1289130252594 and 1289130252603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289130252643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42971008407 + ... + 42971008436.

It is an arithmetic number, because the mean of its divisors is an integer number (257826050532).

Almost surely, 2^{1289130252645} is an apocalyptic number.

1289130252645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1289130252645 is a deficient number, since it is larger than the sum of its proper divisors (773478151611).

1289130252645 is an equidigital number, since it uses as much as digits as its factorization.

1289130252645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85942016851.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 1289130252645 in words is "one trillion, two hundred eighty-nine billion, one hundred thirty million, two hundred fifty-two thousand, six hundred forty-five".