3556621361356 has 24 divisors (see below), whose sum is σ = 7113772302336. Its totient is φ = 1524152816400.

The previous prime is 3556621361353. The next prime is 3556621361357. The reversal of 3556621361356 is 6531631266553.

It is not an unprimeable number, because it can be changed into a prime (3556621361353) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4345036 + ... + 5098291.

It is an arithmetic number, because the mean of its divisors is an integer number (296407179264).

Almost surely, 2^{3556621361356} is an apocalyptic number.

It is an amenable number.

3556621361356 is an abundant number, since it is smaller than the sum of its proper divisors (3557150940980).

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

3556621361356 is a wasteful number, since it uses less digits than its factorization.

3556621361356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9456789 (or 9456787 counting only the distinct ones).

The product of its digits is 8748000, while the sum is 52.

The spelling of 3556621361356 in words is "three trillion, five hundred fifty-six billion, six hundred twenty-one million, three hundred sixty-one thousand, three hundred fifty-six".