37506494321 has 2 divisors, whose sum is σ = 37506494322. Its totient is φ = 37506494320.

The previous prime is 37506494317. The next prime is 37506494351. The reversal of 37506494321 is 12349460573.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20089093696 + 17417400625 = 141736^2 + 131975^2 .

It is an emirp because it is prime and its reverse (12349460573) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37506494321 - 2² = 37506494317 is a prime.

It is not a weakly prime, because it can be changed into another prime (37506494351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18753247160 + 18753247161.

It is an arithmetic number, because the mean of its divisors is an integer number (18753247161).

Almost surely, 2^37506494321 is an apocalyptic number.

It is an amenable number.

37506494321 is a deficient number, since it is larger than the sum of its proper divisors (1).

37506494321 is an equidigital number, since it uses as much as digits as its factorization.

37506494321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 37506494321 in words is "thirty-seven billion, five hundred six million, four hundred ninety-four thousand, three hundred twenty-one".