38287630663957 has 2 divisors, whose sum is σ = 38287630663958. Its totient is φ = 38287630663956.

The previous prime is 38287630663901. The next prime is 38287630664053. The reversal of 38287630663957 is 75936603678283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19578554154756 + 18709076509201 = 4424766^2 + 4325399^2 .

It is a cyclic number.

It is not a de Polignac number, because 38287630663957 - 2¹¹ = 38287630661909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38287630663957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38287630663057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19143815331978 + 19143815331979.

It is an arithmetic number, because the mean of its divisors is an integer number (19143815331979).

Almost surely, 2^{38287630663957} is an apocalyptic number.

It is an amenable number.

38287630663957 is a deficient number, since it is larger than the sum of its proper divisors (1).

38287630663957 is an equidigital number, since it uses as much as digits as its factorization.

38287630663957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1646023680, while the sum is 73.

The spelling of 38287630663957 in words is "thirty-eight trillion, two hundred eighty-seven billion, six hundred thirty million, six hundred sixty-three thousand, nine hundred fifty-seven".