63035402021 has 2 divisors, whose sum is σ = 63035402022. Its totient is φ = 63035402020.

The previous prime is 63035401997. The next prime is 63035402057. The reversal of 63035402021 is 12020453036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63020579521 + 14822500 = 251039^2 + 3850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63035402021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63035402081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31517701010 + 31517701011.

It is an arithmetic number, because the mean of its divisors is an integer number (31517701011).

Almost surely, 2^63035402021 is an apocalyptic number.

It is an amenable number.

63035402021 is a deficient number, since it is larger than the sum of its proper divisors (1).

63035402021 is an equidigital number, since it uses as much as digits as its factorization.

63035402021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 63035402021 its reverse (12020453036), we get a palindrome (75055855057).

The spelling of 63035402021 in words is "sixty-three billion, thirty-five million, four hundred two thousand, twenty-one".