1289487429136 has 45 divisors (see below), whose sum is σ = 2611941645999. Its totient is φ = 616661414688.

The previous prime is 1289487429103. The next prime is 1289487429179. The reversal of 1289487429136 is 6319247849821.

The square root of 1289487429136 is 1135556.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 104464981 + ... + 104477323.

Almost surely, 2^{1289487429136} is an apocalyptic number.

1289487429136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1289487429136 is the 1135556-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1289487429136

1289487429136 is an abundant number, since it is smaller than the sum of its proper divisors (1322454216863).

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

1289487429136 is an frugal number, since it uses more digits than its factorization.

1289487429136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24740 (or 12368 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 64.

Multiplying 1289487429136 by its sum of digits (64), we get a square (82527195464704 = 9084448²).

The spelling of 1289487429136 in words is "one trillion, two hundred eighty-nine billion, four hundred eighty-seven million, four hundred twenty-nine thousand, one hundred thirty-six".