63801385943 has 2 divisors, whose sum is σ = 63801385944. Its totient is φ = 63801385942.

The previous prime is 63801385937. The next prime is 63801385979. The reversal of 63801385943 is 34958310836.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63801385943 - 2⁴ = 63801385927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63801385891 and 63801385900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63801385903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31900692971 + 31900692972.

It is an arithmetic number, because the mean of its divisors is an integer number (31900692972).

Almost surely, 2^63801385943 is an apocalyptic number.

63801385943 is a deficient number, since it is larger than the sum of its proper divisors (1).

63801385943 is an equidigital number, since it uses as much as digits as its factorization.

63801385943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 63801385943 in words is "sixty-three billion, eight hundred one million, three hundred eighty-five thousand, nine hundred forty-three".