385186855520 has 24 divisors (see below), whose sum is σ = 910003946544. Its totient is φ = 154074742144.

The previous prime is 385186855511. The next prime is 385186855549. The reversal of 385186855520 is 25558681583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203708764 + ... + 1203709083.

It is an arithmetic number, because the mean of its divisors is an integer number (37916831106).

Almost surely, 2^385186855520 is an apocalyptic number.

It is an amenable number.

385186855520 is an abundant number, since it is smaller than the sum of its proper divisors (524817091024).

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

385186855520 is a wasteful number, since it uses less digits than its factorization.

385186855520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407417862 (or 2407417854 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 56.

The spelling of 385186855520 in words is "three hundred eighty-five billion, one hundred eighty-six million, eight hundred fifty-five thousand, five hundred twenty".