385665732480 has 1024 divisors, whose sum is σ = 1506608087040. Its totient is φ = 82059264000.

The previous prime is 385665732371. The next prime is 385665732481. The reversal of 385665732480 is 84237566583.

It is a self number, because there is not a number n which added to its sum of digits gives 385665732480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385665732481) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1827799575 + ... + 1827799785.

It is an arithmetic number, because the mean of its divisors is an integer number (1471296960).

Almost surely, 2^385665732480 is an apocalyptic number.

385665732480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385665732480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753304043520).

385665732480 is an abundant number, since it is smaller than the sum of its proper divisors (1120942354560).

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

385665732480 is a wasteful number, since it uses less digits than its factorization.

385665732480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 57.

The spelling of 385665732480 in words is "three hundred eighty-five billion, six hundred sixty-five million, seven hundred thirty-two thousand, four hundred eighty".