387666822258 has 64 divisors (see below), whose sum is σ = 880722933120. Its totient is φ = 126364271616.

The previous prime is 387666822233. The next prime is 387666822281. The reversal of 387666822258 is 852228666783.

It is a junction number, because it is equal to n+sod(n) for n = 387666822195 and 387666822204.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104610 + ... + 886722.

It is an arithmetic number, because the mean of its divisors is an integer number (13761295830).

Almost surely, 2^387666822258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387666822258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440361466560).

387666822258 is an abundant number, since it is smaller than the sum of its proper divisors (493056110862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387666822258 is a wasteful number, since it uses less digits than its factorization.

387666822258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782328 (or 782322 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 63.

The spelling of 387666822258 in words is "three hundred eighty-seven billion, six hundred sixty-six million, eight hundred twenty-two thousand, two hundred fifty-eight".