63428981109 has 16 divisors (see below), whose sum is σ = 92100859200. Its totient is φ = 38594641536.

The previous prime is 63428981107. The next prime is 63428981111. The reversal of 63428981109 is 90118982436.

It is an interprime number because it is at equal distance from previous prime (63428981107) and next prime (63428981111).

It is not a de Polignac number, because 63428981109 - 2¹ = 63428981107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63428981107) 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 in 15 ways as a sum of consecutive naturals, for example, 9133519 + ... + 9140460.

It is an arithmetic number, because the mean of its divisors is an integer number (5756303700).

Almost surely, 2^63428981109 is an apocalyptic number.

It is an amenable number.

63428981109 is a deficient number, since it is larger than the sum of its proper divisors (28671878091).

63428981109 is a wasteful number, since it uses less digits than its factorization.

63428981109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18274084.

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 63428981109 in words is "sixty-three billion, four hundred twenty-eight million, nine hundred eighty-one thousand, one hundred nine".