1385776775832 has 64 divisors (see below), whose sum is σ = 3473031936000. Its totient is φ = 460781343360.

The previous prime is 1385776775821. The next prime is 1385776775863. The reversal of 1385776775832 is 2385776775831.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21092169 + ... + 21157767.

It is an arithmetic number, because the mean of its divisors is an integer number (54266124000).

Almost surely, 2^{1385776775832} is an apocalyptic number.

1385776775832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1385776775832 is an abundant number, since it is smaller than the sum of its proper divisors (2087255160168).

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

1385776775832 is a wasteful number, since it uses less digits than its factorization.

1385776775832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67776 (or 67772 counting only the distinct ones).

The product of its digits is 414892800, while the sum is 69.

Subtracting 1385776775832 from its reverse (2385776775831), we obtain a palindrome (999999999999).

The spelling of 1385776775832 in words is "one trillion, three hundred eighty-five billion, seven hundred seventy-six million, seven hundred seventy-five thousand, eight hundred thirty-two".