2040320166637 has 2 divisors, whose sum is σ = 2040320166638. Its totient is φ = 2040320166636.

The previous prime is 2040320166587. The next prime is 2040320166683. The reversal of 2040320166637 is 7366610230402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1486755894276 + 553564272361 = 1219326^2 + 744019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040320166637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2040320166637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040320166737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020160083318 + 1020160083319.

It is an arithmetic number, because the mean of its divisors is an integer number (1020160083319).

Almost surely, 2^{2040320166637} is an apocalyptic number.

It is an amenable number.

2040320166637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040320166637 is an equidigital number, since it uses as much as digits as its factorization.

2040320166637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 2040320166637 in words is "two trillion, forty billion, three hundred twenty million, one hundred sixty-six thousand, six hundred thirty-seven".