3556748734820 has 36 divisors (see below), whose sum is σ = 7808038408380. Its totient is φ = 1360842990144.

The previous prime is 3556748734817. The next prime is 3556748734829. The reversal of 3556748734820 is 284378476553.

It can be written as a sum of positive squares in 2 ways, for example, as 2581446329344 + 975302405476 = 1606688^2 + 987574^2 .

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3556748734829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168077735 + ... + 168098894.

Almost surely, 2^{3556748734820} is an apocalyptic number.

It is an amenable number.

3556748734820 is an abundant number, since it is smaller than the sum of its proper divisors (4251289673560).

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

3556748734820 is a wasteful number, since it uses less digits than its factorization.

3556748734820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336176684 (or 336176659 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 62.

The spelling of 3556748734820 in words is "three trillion, five hundred fifty-six billion, seven hundred forty-eight million, seven hundred thirty-four thousand, eight hundred twenty".