1987446067632 has 80 divisors (see below), whose sum is σ = 5888729128960. Its totient is φ = 641111630400.

The previous prime is 1987446067583. The next prime is 1987446067637. The reversal of 1987446067632 is 2367606447891.

It is a happy number.

1987446067632 is a `hidden beast` number, since 1 + 9 + 8 + 74 + 460 + 6 + 76 + 32 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1987446067632.

It is not an unprimeable number, because it can be changed into a prime (1987446067637) 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, 74189344 + ... + 74216127.

It is an arithmetic number, because the mean of its divisors is an integer number (73609114112).

Almost surely, 2^{1987446067632} is an apocalyptic number.

1987446067632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1987446067632 is an abundant number, since it is smaller than the sum of its proper divisors (3901283061328).

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

1987446067632 is a wasteful number, since it uses less digits than its factorization.

1987446067632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148405519 (or 148405507 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 1987446067632 in words is "one trillion, nine hundred eighty-seven billion, four hundred forty-six million, sixty-seven thousand, six hundred thirty-two".