37544744161 has 2 divisors, whose sum is σ = 37544744162. Its totient is φ = 37544744160.

The previous prime is 37544744141. The next prime is 37544744177. The reversal of 37544744161 is 16144744573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34989947136 + 2554797025 = 187056^2 + 50545^2 .

It is an emirp because it is prime and its reverse (16144744573) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37544744161 is a prime.

It is a super-2 number, since 2×37544744161² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37544744101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18772372080 + 18772372081.

It is an arithmetic number, because the mean of its divisors is an integer number (18772372081).

Almost surely, 2^37544744161 is an apocalyptic number.

It is an amenable number.

37544744161 is a deficient number, since it is larger than the sum of its proper divisors (1).

37544744161 is an equidigital number, since it uses as much as digits as its factorization.

37544744161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 46.

The spelling of 37544744161 in words is "thirty-seven billion, five hundred forty-four million, seven hundred forty-four thousand, one hundred sixty-one".