3712821861652 has 24 divisors (see below), whose sum is σ = 6656182869672. Its totient is φ = 1811059008000.

The previous prime is 3712821861569. The next prime is 3712821861659. The reversal of 3712821861652 is 2561681282173.

3712821861652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 210070055556 + 3502751806096 = 458334^2 + 1871564^2 .

It is a super-2 number, since 2×3712821861652² (a number of 26 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 3712821861652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3712821861659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701968 + ... + 4596760.

It is an arithmetic number, because the mean of its divisors is an integer number (277340952903).

Almost surely, 2^{3712821861652} is an apocalyptic number.

It is an amenable number.

3712821861652 is a deficient number, since it is larger than the sum of its proper divisors (2943361008020).

3712821861652 is a wasteful number, since it uses less digits than its factorization.

3712821861652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920139 (or 920137 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The spelling of 3712821861652 in words is "three trillion, seven hundred twelve billion, eight hundred twenty-one million, eight hundred sixty-one thousand, six hundred fifty-two".