1285799512760 has 256 divisors, whose sum is σ = 3379835289600. Its totient is φ = 431186853888.

The previous prime is 1285799512733. The next prime is 1285799512783. The reversal of 1285799512760 is 672159975821.

It is a Cunningham number, because it is equal to 1133931²-1.

It is a junction number, because it is equal to n+sod(n) for n = 1285799512693 and 1285799512702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 893536121 + ... + 893537559.

It is an arithmetic number, because the mean of its divisors is an integer number (13202481600).

Almost surely, 2^{1285799512760} is an apocalyptic number.

1285799512760 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 1285799512760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1689917644800).

1285799512760 is an abundant number, since it is smaller than the sum of its proper divisors (2094035776840).

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

1285799512760 is a wasteful number, since it uses less digits than its factorization.

1285799512760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 62.

The spelling of 1285799512760 in words is "one trillion, two hundred eighty-five billion, seven hundred ninety-nine million, five hundred twelve thousand, seven hundred sixty".