987820014823 has 4 divisors (see below), whose sum is σ = 987835889248. Its totient is φ = 987804140400.

The previous prime is 987820014751. The next prime is 987820014827. The reversal of 987820014823 is 328410028789.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 987820014823 - 2¹⁷ = 987819883751 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 (987820014827) 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, 7843503 + ... + 7968448.

It is an arithmetic number, because the mean of its divisors is an integer number (246958972312).

Almost surely, 2^987820014823 is an apocalyptic number.

987820014823 is a deficient number, since it is larger than the sum of its proper divisors (15874425).

987820014823 is a wasteful number, since it uses less digits than its factorization.

987820014823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15874424.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 987820014823 in words is "nine hundred eighty-seven billion, eight hundred twenty million, fourteen thousand, eight hundred twenty-three".