385615442140 has 48 divisors (see below), whose sum is σ = 829564864128. Its totient is φ = 150488138304.

The previous prime is 385615442137. The next prime is 385615442161. The reversal of 385615442140 is 41244516583.

It is a super-3 number, since 3×385615442140³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505479 + ... + 1013281.

It is an arithmetic number, because the mean of its divisors is an integer number (17282601336).

Almost surely, 2^385615442140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385615442140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414782432064).

385615442140 is an abundant number, since it is smaller than the sum of its proper divisors (443949421988).

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

385615442140 is a wasteful number, since it uses less digits than its factorization.

385615442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508738 (or 508736 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 385615442140 in words is "three hundred eighty-five billion, six hundred fifteen million, four hundred forty-two thousand, one hundred forty".