63081403673 has 2 divisors, whose sum is σ = 63081403674. Its totient is φ = 63081403672.

The previous prime is 63081403667. The next prime is 63081403681. The reversal of 63081403673 is 37630418036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55416926464 + 7664477209 = 235408^2 + 87547^2 .

It is a cyclic number.

It is not a de Polignac number, because 63081403673 - 2⁴ = 63081403657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63081403673.

It is not a weakly prime, because it can be changed into another prime (63081403373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31540701836 + 31540701837.

It is an arithmetic number, because the mean of its divisors is an integer number (31540701837).

Almost surely, 2^63081403673 is an apocalyptic number.

It is an amenable number.

63081403673 is a deficient number, since it is larger than the sum of its proper divisors (1).

63081403673 is an equidigital number, since it uses as much as digits as its factorization.

63081403673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 63081403673 in words is "sixty-three billion, eighty-one million, four hundred three thousand, six hundred seventy-three".