1087218565850 has 12 divisors (see below), whose sum is σ = 2022226532574. Its totient is φ = 434887426320.

The previous prime is 1087218565819. The next prime is 1087218565861. The reversal of 1087218565850 is 585658127801.

It can be written as a sum of positive squares in 3 ways, for example, as 959747430889 + 127471134961 = 979667^2 + 357031^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10872185609 + ... + 10872185708.

Almost surely, 2^{1087218565850} is an apocalyptic number.

1087218565850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1087218565850 is a deficient number, since it is larger than the sum of its proper divisors (935007966724).

1087218565850 is a wasteful number, since it uses less digits than its factorization.

1087218565850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21744371329 (or 21744371324 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 56.

The spelling of 1087218565850 in words is "one trillion, eighty-seven billion, two hundred eighteen million, five hundred sixty-five thousand, eight hundred fifty".