37427643257 has 2 divisors, whose sum is σ = 37427643258. Its totient is φ = 37427643256.

The previous prime is 37427643229. The next prime is 37427643271. The reversal of 37427643257 is 75234672473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20185589776 + 17242053481 = 142076^2 + 131309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37427643257 is a prime.

It is not a weakly prime, because it can be changed into another prime (37427643277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18713821628 + 18713821629.

It is an arithmetic number, because the mean of its divisors is an integer number (18713821629).

Almost surely, 2^37427643257 is an apocalyptic number.

It is an amenable number.

37427643257 is a deficient number, since it is larger than the sum of its proper divisors (1).

37427643257 is an equidigital number, since it uses as much as digits as its factorization.

37427643257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5927040, while the sum is 50.

The spelling of 37427643257 in words is "thirty-seven billion, four hundred twenty-seven million, six hundred forty-three thousand, two hundred fifty-seven".