338013781256 has 8 divisors (see below), whose sum is σ = 633775839870. Its totient is φ = 169006890624.

The previous prime is 338013781219. The next prime is 338013781333. The reversal of 338013781256 is 652187310833.

It can be written as a sum of positive squares in only one way, i.e., 248891232100 + 89122549156 = 498890^2 + 298534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×338013781256² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 338013781256.

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 as a sum of consecutive naturals, namely, 21125861321 + ... + 21125861336.

Almost surely, 2^338013781256 is an apocalyptic number.

It is an amenable number.

338013781256 is a deficient number, since it is larger than the sum of its proper divisors (295762058614).

338013781256 is a wasteful number, since it uses less digits than its factorization.

338013781256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42251722663 (or 42251722659 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 338013781256 in words is "three hundred thirty-eight billion, thirteen million, seven hundred eighty-one thousand, two hundred fifty-six".