63850638197 has 2 divisors, whose sum is σ = 63850638198. Its totient is φ = 63850638196.

The previous prime is 63850638121. The next prime is 63850638211. The reversal of 63850638197 is 79183605836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50889043396 + 12961594801 = 225586^2 + 113849^2 .

It is a cyclic number.

It is not a de Polignac number, because 63850638197 - 2¹⁸ = 63850376053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63850638497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31925319098 + 31925319099.

It is an arithmetic number, because the mean of its divisors is an integer number (31925319099).

Almost surely, 2^63850638197 is an apocalyptic number.

It is an amenable number.

63850638197 is a deficient number, since it is larger than the sum of its proper divisors (1).

63850638197 is an equidigital number, since it uses as much as digits as its factorization.

63850638197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 63850638197 in words is "sixty-three billion, eight hundred fifty million, six hundred thirty-eight thousand, one hundred ninety-seven".