395668128380 has 48 divisors (see below), whose sum is σ = 950241754560. Its totient is φ = 135566466048.

The previous prime is 395668128377. The next prime is 395668128397. The reversal of 395668128380 is 83821866593.

It is a super-2 number, since 2×395668128380² (a number of 24 digits) contains 22 as substring.

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, 740567 + ... + 1157486.

It is an arithmetic number, because the mean of its divisors is an integer number (19796703220).

Almost surely, 2^395668128380 is an apocalyptic number.

It is an amenable number.

395668128380 is an abundant number, since it is smaller than the sum of its proper divisors (554573626180).

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

395668128380 is a wasteful number, since it uses less digits than its factorization.

395668128380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899558 (or 1899556 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 59.

The spelling of 395668128380 in words is "three hundred ninety-five billion, six hundred sixty-eight million, one hundred twenty-eight thousand, three hundred eighty".