5638073321537 has 2 divisors, whose sum is σ = 5638073321538. Its totient is φ = 5638073321536.

The previous prime is 5638073321533. The next prime is 5638073321563. The reversal of 5638073321537 is 7351233708365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5637129541696 + 943779841 = 2374264^2 + 30721^2 .

It is a cyclic number.

It is not a de Polignac number, because 5638073321537 - 2² = 5638073321533 is a prime.

It is not a weakly prime, because it can be changed into another prime (5638073321533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2819036660768 + 2819036660769.

It is an arithmetic number, because the mean of its divisors is an integer number (2819036660769).

Almost surely, 2^{5638073321537} is an apocalyptic number.

It is an amenable number.

5638073321537 is a deficient number, since it is larger than the sum of its proper divisors (1).

5638073321537 is an equidigital number, since it uses as much as digits as its factorization.

5638073321537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9525600, while the sum is 53.

The spelling of 5638073321537 in words is "five trillion, six hundred thirty-eight billion, seventy-three million, three hundred twenty-one thousand, five hundred thirty-seven".