63187537873 has 2 divisors, whose sum is σ = 63187537874. Its totient is φ = 63187537872.

The previous prime is 63187537843. The next prime is 63187537979. The reversal of 63187537873 is 37873578136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57853718784 + 5333819089 = 240528^2 + 73033^2 .

It is a cyclic number.

It is not a de Polignac number, because 63187537873 - 2¹³ = 63187529681 is a prime.

It is not a weakly prime, because it can be changed into another prime (63187537843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31593768936 + 31593768937.

It is an arithmetic number, because the mean of its divisors is an integer number (31593768937).

Almost surely, 2^63187537873 is an apocalyptic number.

It is an amenable number.

63187537873 is a deficient number, since it is larger than the sum of its proper divisors (1).

63187537873 is an equidigital number, since it uses as much as digits as its factorization.

63187537873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17781120, while the sum is 58.

The spelling of 63187537873 in words is "sixty-three billion, one hundred eighty-seven million, five hundred thirty-seven thousand, eight hundred seventy-three".