1385871853824 has 108 divisors (see below), whose sum is σ = 4000202449152. Its totient is φ = 461449497600.

The previous prime is 1385871853787. The next prime is 1385871853831. The reversal of 1385871853824 is 4283581785831.

1385871853824 is a `hidden beast` number, since 1 + 3 + 8 + 5 + 8 + 71 + 8 + 538 + 24 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1768809 + ... + 2429079.

Almost surely, 2^{1385871853824} 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 1385871853824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2000101224576).

1385871853824 is an abundant number, since it is smaller than the sum of its proper divisors (2614330595328).

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

1385871853824 is an equidigital number, since it uses as much as digits as its factorization.

1385871853824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661204 (or 661187 counting only the distinct ones).

The product of its digits is 51609600, while the sum is 63.

The spelling of 1385871853824 in words is "one trillion, three hundred eighty-five billion, eight hundred seventy-one million, eight hundred fifty-three thousand, eight hundred twenty-four".