63402512077 has 2 divisors, whose sum is σ = 63402512078. Its totient is φ = 63402512076.

The previous prime is 63402512071. The next prime is 63402512183. The reversal of 63402512077 is 77021520436.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49633601796 + 13768910281 = 222786^2 + 117341^2 .

It is a cyclic number.

It is not a de Polignac number, because 63402512077 - 2³⁵ = 29042773709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63402512071) 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, 31701256038 + 31701256039.

It is an arithmetic number, because the mean of its divisors is an integer number (31701256039).

Almost surely, 2^63402512077 is an apocalyptic number.

It is an amenable number.

63402512077 is a deficient number, since it is larger than the sum of its proper divisors (1).

63402512077 is an equidigital number, since it uses as much as digits as its factorization.

63402512077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 63402512077 in words is "sixty-three billion, four hundred two million, five hundred twelve thousand, seventy-seven".