385552340646 has 32 divisors (see below), whose sum is σ = 844177603968. Its totient is φ = 116421195840.

The previous prime is 385552340581. The next prime is 385552340651. The reversal of 385552340646 is 646043255583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10302351 + ... + 10339706.

It is an arithmetic number, because the mean of its divisors is an integer number (26380550124).

Almost surely, 2^385552340646 is an apocalyptic number.

385552340646 is an abundant number, since it is smaller than the sum of its proper divisors (458625263322).

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

385552340646 is a wasteful number, since it uses less digits than its factorization.

385552340646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20642356.

The product of its (nonzero) digits is 10368000, while the sum is 51.

The spelling of 385552340646 in words is "three hundred eighty-five billion, five hundred fifty-two million, three hundred forty thousand, six hundred forty-six".