1301985539712 has 1728 divisors, whose sum is σ = 4879755316800. Its totient is φ = 344443207680.

The previous prime is 1301985539677. The next prime is 1301985539759. The reversal of 1301985539712 is 2179355891031.

1301985539712 is a `hidden beast` number, since 1 + 3 + 0 + 1 + 98 + 5 + 539 + 7 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 14629050964 + ... + 14629051052.

It is an arithmetic number, because the mean of its divisors is an integer number (2823932475).

Almost surely, 2^{1301985539712} is an apocalyptic number.

1301985539712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1301985539712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2439877658400).

1301985539712 is an abundant number, since it is smaller than the sum of its proper divisors (3577769777088).

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

1301985539712 is a wasteful number, since it uses less digits than its factorization.

1301985539712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 54.

The spelling of 1301985539712 in words is "one trillion, three hundred one billion, nine hundred eighty-five million, five hundred thirty-nine thousand, seven hundred twelve".