10002011987 has 16 divisors (see below), whose sum is σ = 11085444864. Its totient is φ = 8947884000.

The previous prime is 10002011963. The next prime is 10002012011. The reversal of 10002011987 is 78911020001.

It is an interprime number because it is at equal distance from previous prime (10002011963) and next prime (10002012011).

It is not a de Polignac number, because 10002011987 - 2⁶ = 10002011923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10002011917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775562 + ... + 788352.

It is an arithmetic number, because the mean of its divisors is an integer number (692840304).

Almost surely, 2^10002011987 is an apocalyptic number.

10002011987 is a deficient number, since it is larger than the sum of its proper divisors (1083432877).

10002011987 is a wasteful number, since it uses less digits than its factorization.

10002011987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13930.

The product of its (nonzero) digits is 1008, while the sum is 29.

Adding to 10002011987 its reverse (78911020001), we get a palindrome (88913031988).

The spelling of 10002011987 in words is "ten billion, two million, eleven thousand, nine hundred eighty-seven".