3712821861653 has 16 divisors (see below), whose sum is σ = 3866909699520. Its totient is φ = 3560499742464.

The previous prime is 3712821861569. The next prime is 3712821861659. The reversal of 3712821861653 is 3561681282173.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3712821861653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3712821861595 and 3712821861604.

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 15 ways as a sum of consecutive naturals, for example, 7088150 + ... + 7593912.

It is an arithmetic number, because the mean of its divisors is an integer number (241681856220).

Almost surely, 2^{3712821861653} is an apocalyptic number.

It is an amenable number.

3712821861653 is a deficient number, since it is larger than the sum of its proper divisors (154087837867).

3712821861653 is a wasteful number, since it uses less digits than its factorization.

3712821861653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507508.

The product of its digits is 2903040, while the sum is 53.

The spelling of 3712821861653 in words is "three trillion, seven hundred twelve billion, eight hundred twenty-one million, eight hundred sixty-one thousand, six hundred fifty-three".