385905811552 has 48 divisors (see below), whose sum is σ = 804529590480. Its totient is φ = 181583269888.

The previous prime is 385905811523. The next prime is 385905811559. The reversal of 385905811552 is 255118509583.

It is a self number, because there is not a number n which added to its sum of digits gives 385905811552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385905811559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5891043 + ... + 5956189.

It is an arithmetic number, because the mean of its divisors is an integer number (16761033135).

Almost surely, 2^385905811552 is an apocalyptic number.

385905811552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

385905811552 is an abundant number, since it is smaller than the sum of its proper divisors (418623778928).

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

385905811552 is a wasteful number, since it uses less digits than its factorization.

385905811552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76063 (or 76055 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 52.

The spelling of 385905811552 in words is "three hundred eighty-five billion, nine hundred five million, eight hundred eleven thousand, five hundred fifty-two".