37043957081 has 2 divisors, whose sum is σ = 37043957082. Its totient is φ = 37043957080.

The previous prime is 37043957063. The next prime is 37043957087. The reversal of 37043957081 is 18075934073.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24188025625 + 12855931456 = 155525^2 + 113384^2 .

It is an emirp because it is prime and its reverse (18075934073) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37043957081 - 2¹⁰ = 37043956057 is a prime.

It is a super-2 number, since 2×37043957081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37043957087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18521978540 + 18521978541.

It is an arithmetic number, because the mean of its divisors is an integer number (18521978541).

Almost surely, 2^37043957081 is an apocalyptic number.

It is an amenable number.

37043957081 is a deficient number, since it is larger than the sum of its proper divisors (1).

37043957081 is an equidigital number, since it uses as much as digits as its factorization.

37043957081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 37043957081 in words is "thirty-seven billion, forty-three million, nine hundred fifty-seven thousand, eighty-one".