1326556130436 has 18 divisors (see below), whose sum is σ = 3353239107582. Its totient is φ = 442185376800.

The previous prime is 1326556130387. The next prime is 1326556130521. The reversal of 1326556130436 is 6340316556231.

1326556130436 is a `hidden beast` number, since 1 + 3 + 26 + 5 + 5 + 613 + 0 + 4 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 860708929536 + 465847200900 = 927744^2 + 682530^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 1326556130391 and 1326556130400.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18424390665 + ... + 18424390736.

Almost surely, 2^{1326556130436} is an apocalyptic number.

It is an amenable number.

1326556130436 is an abundant number, since it is smaller than the sum of its proper divisors (2026682977146).

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

1326556130436 is a wasteful number, since it uses less digits than its factorization.

1326556130436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36848781411 (or 36848781406 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 1326556130436 in words is "one trillion, three hundred twenty-six billion, five hundred fifty-six million, one hundred thirty thousand, four hundred thirty-six".