37640587871 has 2 divisors, whose sum is σ = 37640587872. Its totient is φ = 37640587870.

The previous prime is 37640587867. The next prime is 37640587883. The reversal of 37640587871 is 17878504673.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 37640587871 - 2² = 37640587867 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37640587571) 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, 18820293935 + 18820293936.

It is an arithmetic number, because the mean of its divisors is an integer number (18820293936).

Almost surely, 2^37640587871 is an apocalyptic number.

37640587871 is a deficient number, since it is larger than the sum of its proper divisors (1).

37640587871 is an equidigital number, since it uses as much as digits as its factorization.

37640587871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 37640587871 in words is "thirty-seven billion, six hundred forty million, five hundred eighty-seven thousand, eight hundred seventy-one".