1289148981102 has 36 divisors (see below), whose sum is σ = 2967124339296. Its totient is φ = 404438894400.

The previous prime is 1289148981079. The next prime is 1289148981103. The reversal of 1289148981102 is 2011898419821.

1289148981102 is a `hidden beast` number, since 1 + 2 + 89 + 1 + 489 + 81 + 1 + 0 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289148981103) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 123903774 + ... + 123914177.

It is an arithmetic number, because the mean of its divisors is an integer number (82420120536).

Almost surely, 2^{1289148981102} is an apocalyptic number.

1289148981102 is an abundant number, since it is smaller than the sum of its proper divisors (1677975358194).

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

1289148981102 is a wasteful number, since it uses less digits than its factorization.

1289148981102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247817993 (or 247817973 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 54.

The spelling of 1289148981102 in words is "one trillion, two hundred eighty-nine billion, one hundred forty-eight million, nine hundred eighty-one thousand, one hundred two".