1987521080086 has 8 divisors (see below), whose sum is σ = 2982936973464. Its totient is φ = 993208755600.

The previous prime is 1987521080063. The next prime is 1987521080089. The reversal of 1987521080086 is 6800801257891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987521080089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275887720 + ... + 275894923.

It is an arithmetic number, because the mean of its divisors is an integer number (372867121683).

Almost surely, 2^{1987521080086} is an apocalyptic number.

1987521080086 is a deficient number, since it is larger than the sum of its proper divisors (995415893378).

1987521080086 is a wasteful number, since it uses less digits than its factorization.

1987521080086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551784446.

The product of its (nonzero) digits is 1935360, while the sum is 55.

The spelling of 1987521080086 in words is "one trillion, nine hundred eighty-seven billion, five hundred twenty-one million, eighty thousand, eighty-six".