1287466018240 has 112 divisors (see below), whose sum is σ = 3141750822912. Its totient is φ = 502373938176.

The previous prime is 1287466018229. The next prime is 1287466018243. The reversal of 1287466018240 is 428106647821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287466018243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1916817 + ... + 2499823.

Almost surely, 2^{1287466018240} is an apocalyptic number.

1287466018240 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 1287466018240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570875411456).

1287466018240 is an abundant number, since it is smaller than the sum of its proper divisors (1854284804672).

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

1287466018240 is a wasteful number, since it uses less digits than its factorization.

1287466018240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583194 (or 583184 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 1287466018240 in words is "one trillion, two hundred eighty-seven billion, four hundred sixty-six million, eighteen thousand, two hundred forty".