1289068265340 has 144 divisors (see below), whose sum is σ = 4140587898720. Its totient is φ = 323499294720.

The previous prime is 1289068265299. The next prime is 1289068265341. The reversal of 1289068265340 is 435628609821.

1289068265340 is a `hidden beast` number, since 1 + 2 + 89 + 0 + 6 + 8 + 26 + 534 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289068265341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59754076 + ... + 59775644.

It is an arithmetic number, because the mean of its divisors is an integer number (28754082630).

Almost surely, 2^{1289068265340} is an apocalyptic number.

1289068265340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1289068265340 is an abundant number, since it is smaller than the sum of its proper divisors (2851519633380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1289068265340 is a wasteful number, since it uses less digits than its factorization.

1289068265340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41132 (or 41127 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 1289068265340 in words is "one trillion, two hundred eighty-nine billion, sixty-eight million, two hundred sixty-five thousand, three hundred forty".