385556485640 has 16 divisors (see below), whose sum is σ = 867502092780. Its totient is φ = 154222594240.

The previous prime is 385556485631. The next prime is 385556485661. The reversal of 385556485640 is 46584655583.

It can be written as a sum of positive squares in 2 ways, for example, as 327227473444 + 58329012196 = 572038^2 + 241514^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 385556485640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4819456031 + ... + 4819456110.

Almost surely, 2^385556485640 is an apocalyptic number.

It is an amenable number.

385556485640 is an abundant number, since it is smaller than the sum of its proper divisors (481945607140).

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

385556485640 is a wasteful number, since it uses less digits than its factorization.

385556485640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638912152 (or 9638912148 counting only the distinct ones).

The product of its (nonzero) digits is 69120000, while the sum is 59.

The spelling of 385556485640 in words is "three hundred eighty-five billion, five hundred fifty-six million, four hundred eighty-five thousand, six hundred forty".