1287880620750 has 96 divisors (see below), whose sum is σ = 3611408228064. Its totient is φ = 343434816000.

The previous prime is 1287880620749. The next prime is 1287880620853. The reversal of 1287880620750 is 570260887821.

1287880620750 is a `hidden beast` number, since 1 + 2 + 8 + 7 + 8 + 8 + 0 + 620 + 7 + 5 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10539091 + ... + 10660590.

It is an arithmetic number, because the mean of its divisors is an integer number (37618835709).

Almost surely, 2^{1287880620750} is an apocalyptic number.

1287880620750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1287880620750 is an abundant number, since it is smaller than the sum of its proper divisors (2323527607314).

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

1287880620750 is an equidigital number, since it uses as much as digits as its factorization.

1287880620750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21199713 (or 21199691 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 1287880620750 in words is "one trillion, two hundred eighty-seven billion, eight hundred eighty million, six hundred twenty thousand, seven hundred fifty".