1286640704160 has 576 divisors, whose sum is σ = 5107249615104. Its totient is φ = 288866304000.

The previous prime is 1286640704147. The next prime is 1286640704177. The reversal of 1286640704160 is 614070466821.

1286640704160 is a `hidden beast` number, since 1 + 2 + 86 + 6 + 407 + 0 + 4 + 160 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 95 ways as a sum of consecutive naturals, for example, 803647360 + ... + 803648960.

It is an arithmetic number, because the mean of its divisors is an integer number (8866752804).

Almost surely, 2^{1286640704160} is an apocalyptic number.

1286640704160 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 1286640704160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2553624807552).

1286640704160 is an abundant number, since it is smaller than the sum of its proper divisors (3820608910944).

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

1286640704160 is a wasteful number, since it uses less digits than its factorization.

1286640704160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 1286640704160 in words is "one trillion, two hundred eighty-six billion, six hundred forty million, seven hundred four thousand, one hundred sixty".