37668706813 has 2 divisors, whose sum is σ = 37668706814. Its totient is φ = 37668706812.

The previous prime is 37668706807. The next prime is 37668706819. The reversal of 37668706813 is 31860786673.

It is a balanced prime because it is at equal distance from previous prime (37668706807) and next prime (37668706819).

It can be written as a sum of positive squares in only one way, i.e., 28421576569 + 9247130244 = 168587^2 + 96162^2 .

It is a cyclic number.

It is not a de Polignac number, because 37668706813 - 2⁵ = 37668706781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37668706819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18834353406 + 18834353407.

It is an arithmetic number, because the mean of its divisors is an integer number (18834353407).

Almost surely, 2^37668706813 is an apocalyptic number.

It is an amenable number.

37668706813 is a deficient number, since it is larger than the sum of its proper divisors (1).

37668706813 is an equidigital number, since it uses as much as digits as its factorization.

37668706813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 37668706813 in words is "thirty-seven billion, six hundred sixty-eight million, seven hundred six thousand, eight hundred thirteen".