395553982985 has 12 divisors (see below), whose sum is σ = 552161070468. Its totient is φ = 271237016736.

The previous prime is 395553982979. The next prime is 395553983017. The reversal of 395553982985 is 589289355593.

It can be written as a sum of positive squares in 2 ways, for example, as 71424166009 + 324129816976 = 267253^2 + 569324^2 .

It is not a de Polignac number, because 395553982985 - 2¹⁸ = 395553720841 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 807252782 + ... + 807253271.

It is an arithmetic number, because the mean of its divisors is an integer number (46013422539).

Almost surely, 2^395553982985 is an apocalyptic number.

395553982985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

395553982985 is a deficient number, since it is larger than the sum of its proper divisors (156607087483).

395553982985 is a wasteful number, since it uses less digits than its factorization.

395553982985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614506072 (or 1614506065 counting only the distinct ones).

The product of its digits is 524880000, while the sum is 71.

The spelling of 395553982985 in words is "three hundred ninety-five billion, five hundred fifty-three million, nine hundred eighty-two thousand, nine hundred eighty-five".