63435080381 has 2 divisors, whose sum is σ = 63435080382. Its totient is φ = 63435080380.

The previous prime is 63435080369. The next prime is 63435080383. The reversal of 63435080381 is 18308053436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61350336100 + 2084744281 = 247690^2 + 45659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63435080381 is a prime.

It is a super-2 number, since 2×63435080381² (a number of 22 digits) contains 22 as substring.

Together with 63435080383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63435080383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31717540190 + 31717540191.

It is an arithmetic number, because the mean of its divisors is an integer number (31717540191).

Almost surely, 2^63435080381 is an apocalyptic number.

It is an amenable number.

63435080381 is a deficient number, since it is larger than the sum of its proper divisors (1).

63435080381 is an equidigital number, since it uses as much as digits as its factorization.

63435080381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 63435080381 in words is "sixty-three billion, four hundred thirty-five million, eighty thousand, three hundred eighty-one".