3707003740021 has 2 divisors, whose sum is σ = 3707003740022. Its totient is φ = 3707003740020.

The previous prime is 3707003740009. The next prime is 3707003740049. The reversal of 3707003740021 is 1200473007073.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2101879445796 + 1605124294225 = 1449786^2 + 1266935^2 .

It is an emirp because it is prime and its reverse (1200473007073) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3707003740021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3707003740051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1853501870010 + 1853501870011.

It is an arithmetic number, because the mean of its divisors is an integer number (1853501870011).

Almost surely, 2^{3707003740021} is an apocalyptic number.

It is an amenable number.

3707003740021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3707003740021 is an equidigital number, since it uses as much as digits as its factorization.

3707003740021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 34.

Adding to 3707003740021 its reverse (1200473007073), we get a palindrome (4907476747094).

The spelling of 3707003740021 in words is "three trillion, seven hundred seven billion, three million, seven hundred forty thousand, twenty-one".