1385921160855 has 64 divisors (see below), whose sum is σ = 3071825280000. Its totient is φ = 575967231360.

The previous prime is 1385921160761. The next prime is 1385921160857. The reversal of 1385921160855 is 5580611295831.

1385921160855 is a `hidden beast` number, since 1 + 3 + 8 + 5 + 9 + 21 + 1 + 608 + 5 + 5 = 666.

It is not a de Polignac number, because 1385921160855 - 2⁹ = 1385921160343 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385921160857) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66652480 + ... + 66673269.

It is an arithmetic number, because the mean of its divisors is an integer number (47997270000).

Almost surely, 2^{1385921160855} is an apocalyptic number.

1385921160855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1385921160855 is an abundant number, since it is smaller than the sum of its proper divisors (1685904119145).

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

1385921160855 is a wasteful number, since it uses less digits than its factorization.

1385921160855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133325781 (or 133325775 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 54.

The spelling of 1385921160855 in words is "one trillion, three hundred eighty-five billion, nine hundred twenty-one million, one hundred sixty thousand, eight hundred fifty-five".