1987771232004 has 48 divisors (see below), whose sum is σ = 4694583918528. Its totient is φ = 654527915008.

The previous prime is 1987771231997. The next prime is 1987771232033. The reversal of 1987771232004 is 4002321777891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8385964 + ... + 8619740.

It is an arithmetic number, because the mean of its divisors is an integer number (97803831636).

Almost surely, 2^{1987771232004} is an apocalyptic number.

It is an amenable number.

1987771232004 is an abundant number, since it is smaller than the sum of its proper divisors (2706812686524).

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

1987771232004 is a wasteful number, since it uses less digits than its factorization.

1987771232004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242404 (or 242402 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 51.

The spelling of 1987771232004 in words is "one trillion, nine hundred eighty-seven billion, seven hundred seventy-one million, two hundred thirty-two thousand, four".