63969436390 has 16 divisors (see below), whose sum is σ = 115851399408. Its totient is φ = 25430793696.

The previous prime is 63969436381. The next prime is 63969436469. The reversal of 63969436390 is 9363496936.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 19620897 + ... + 19624156.

It is an arithmetic number, because the mean of its divisors is an integer number (7240712463).

Almost surely, 2^63969436390 is an apocalyptic number.

63969436390 is a deficient number, since it is larger than the sum of its proper divisors (51881963018).

63969436390 is a wasteful number, since it uses less digits than its factorization.

63969436390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39245223.

The product of its (nonzero) digits is 17006112, while the sum is 58.

The spelling of 63969436390 in words is "sixty-three billion, nine hundred sixty-nine million, four hundred thirty-six thousand, three hundred ninety".