1286504000000 has 140 divisors (see below), whose sum is σ = 3213097973382. Its totient is φ = 514598400000.

The previous prime is 1286503999987. The next prime is 1286504000053. The reversal of 1286504000000 is 4056821.

It can be written as a sum of positive squares in 7 ways, for example, as 1046905497856 + 239598502144 = 1023184^2 + 489488^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7919594 + ... + 8080406.

Almost surely, 2^{1286504000000} is an apocalyptic number.

1286504000000 is a gapful number since it is divisible by the number (10) 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 1286504000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606548986691).

1286504000000 is an abundant number, since it is smaller than the sum of its proper divisors (1926593973382).

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

1286504000000 is an frugal number, since it uses more digits than its factorization.

1286504000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160861 (or 160820 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 1286504000000 its reverse (4056821), we get a palindrome (1286508056821).

The spelling of 1286504000000 in words is "one trillion, two hundred eighty-six billion, five hundred four million", and thus it is an aban number.