987878366783 has 24 divisors (see below), whose sum is σ = 1242996247584. Its totient is φ = 768519195840.

The previous prime is 987878366773. The next prime is 987878366809. The reversal of 987878366783 is 387663878789.

987878366783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 987878366783 - 2⁴ = 987878366767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 987878366698 and 987878366707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987878366753) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 432116 + ... + 1470537.

It is an arithmetic number, because the mean of its divisors is an integer number (51791510316).

Almost surely, 2^987878366783 is an apocalyptic number.

987878366783 is a deficient number, since it is larger than the sum of its proper divisors (255117880801).

987878366783 is a wasteful number, since it uses less digits than its factorization.

987878366783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903295 (or 1903284 counting only the distinct ones).

The product of its digits is 4096770048, while the sum is 80.

The spelling of 987878366783 in words is "nine hundred eighty-seven billion, eight hundred seventy-eight million, three hundred sixty-six thousand, seven hundred eighty-three".