385769731536 has 360 divisors, whose sum is σ = 1268263825920. Its totient is φ = 109138917888.

The previous prime is 385769731511. The next prime is 385769731537. The reversal of 385769731536 is 635137967583.

385769731536 is a `hidden beast` number, since 3 + 8 + 5 + 7 + 6 + 97 + 3 + 1 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385769731537) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 530632005 + ... + 530632731.

It is an arithmetic number, because the mean of its divisors is an integer number (3522955072).

Almost surely, 2^385769731536 is an apocalyptic number.

385769731536 is a gapful number since it is divisible by the number (36) 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 385769731536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634131912960).

385769731536 is an abundant number, since it is smaller than the sum of its proper divisors (882494094384).

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

385769731536 is a wasteful number, since it uses less digits than its factorization.

385769731536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391 (or 1375 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 63.

The spelling of 385769731536 in words is "three hundred eighty-five billion, seven hundred sixty-nine million, seven hundred thirty-one thousand, five hundred thirty-six".