63131255851 has 2 divisors, whose sum is σ = 63131255852. Its totient is φ = 63131255850.

The previous prime is 63131255843. The next prime is 63131255861. The reversal of 63131255851 is 15855213136.

63131255851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63131255851 - 2³ = 63131255843 is a prime.

It is not a weakly prime, because it can be changed into another prime (63131255801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31565627925 + 31565627926.

It is an arithmetic number, because the mean of its divisors is an integer number (31565627926).

Almost surely, 2^63131255851 is an apocalyptic number.

63131255851 is a deficient number, since it is larger than the sum of its proper divisors (1).

63131255851 is an equidigital number, since it uses as much as digits as its factorization.

63131255851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 40.

Adding to 63131255851 its reverse (15855213136), we get a palindrome (78986468987).

The spelling of 63131255851 in words is "sixty-three billion, one hundred thirty-one million, two hundred fifty-five thousand, eight hundred fifty-one".