37056521081 has 4 divisors (see below), whose sum is σ = 37065346164. Its totient is φ = 37047696000.

The previous prime is 37056521039. The next prime is 37056521083. The reversal of 37056521081 is 18012565073.

37056521081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14947507600 + 22109013481 = 122260^2 + 148691^2 .

It is a cyclic number.

It is not a de Polignac number, because 37056521081 - 2¹⁰ = 37056520057 is a prime.

It is a super-2 number, since 2×37056521081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37056521083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4406240 + ... + 4414641.

It is an arithmetic number, because the mean of its divisors is an integer number (9266336541).

Almost surely, 2^37056521081 is an apocalyptic number.

It is an amenable number.

37056521081 is a deficient number, since it is larger than the sum of its proper divisors (8825083).

37056521081 is an equidigital number, since it uses as much as digits as its factorization.

37056521081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825082.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 37056521081 in words is "thirty-seven billion, fifty-six million, five hundred twenty-one thousand, eighty-one".