987678190013 has 4 divisors (see below), whose sum is σ = 987685221600. Its totient is φ = 987671158428.

The previous prime is 987678189973. The next prime is 987678190039. The reversal of 987678190013 is 310091876789.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 987678190013 - 2¹⁰ = 987678188989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987678190063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3300713 + ... + 3587486.

It is an arithmetic number, because the mean of its divisors is an integer number (246921305400).

Almost surely, 2^987678190013 is an apocalyptic number.

It is an amenable number.

987678190013 is a deficient number, since it is larger than the sum of its proper divisors (7031587).

987678190013 is a wasteful number, since it uses less digits than its factorization.

987678190013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031586.

The product of its (nonzero) digits is 4572288, while the sum is 59.

The spelling of 987678190013 in words is "nine hundred eighty-seven billion, six hundred seventy-eight million, one hundred ninety thousand, thirteen".