1361989302256 has 60 divisors (see below), whose sum is σ = 2908871329000. Its totient is φ = 617311854720.

The previous prime is 1361989302251. The next prime is 1361989302263. The reversal of 1361989302256 is 6522039891631.

It is a junction number, because it is equal to n+sod(n) for n = 1361989302197 and 1361989302206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361989302251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332226 + ... + 1683553.

Almost surely, 2^{1361989302256} is an apocalyptic number.

1361989302256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1361989302256 is an abundant number, since it is smaller than the sum of its proper divisors (1546882026744).

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

1361989302256 is a wasteful number, since it uses less digits than its factorization.

1361989302256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016158 (or 2016141 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 1361989302256 in words is "one trillion, three hundred sixty-one billion, nine hundred eighty-nine million, three hundred two thousand, two hundred fifty-six".