63138652237 has 2 divisors, whose sum is σ = 63138652238. Its totient is φ = 63138652236.

The previous prime is 63138652231. The next prime is 63138652261. The reversal of 63138652237 is 73225683136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36800283556 + 26338368681 = 191834^2 + 162291^2 .

It is a cyclic number.

It is not a de Polignac number, because 63138652237 - 2³ = 63138652229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63138652231) 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, 31569326118 + 31569326119.

It is an arithmetic number, because the mean of its divisors is an integer number (31569326119).

Almost surely, 2^63138652237 is an apocalyptic number.

It is an amenable number.

63138652237 is a deficient number, since it is larger than the sum of its proper divisors (1).

63138652237 is an equidigital number, since it uses as much as digits as its factorization.

63138652237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 46.

The spelling of 63138652237 in words is "sixty-three billion, one hundred thirty-eight million, six hundred fifty-two thousand, two hundred thirty-seven".