987129001006 has 4 divisors (see below), whose sum is σ = 1480693501512. Its totient is φ = 493564500502.

The previous prime is 987129000859. The next prime is 987129001007. The reversal of 987129001006 is 600100921789.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987129001007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246782250250 + ... + 246782250253.

It is an arithmetic number, because the mean of its divisors is an integer number (370173375378).

Almost surely, 2^987129001006 is an apocalyptic number.

987129001006 is a deficient number, since it is larger than the sum of its proper divisors (493564500506).

987129001006 is a wasteful number, since it uses less digits than its factorization.

987129001006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493564500505.

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 987129001006 in words is "nine hundred eighty-seven billion, one hundred twenty-nine million, one thousand, six".