63881046009 has 189 divisors, whose sum is σ = 113107403199. Its totient is φ = 36031612320.

The previous prime is 63881045999. The next prime is 63881046011. The reversal of 63881046009 is 90064018836.

The square root of 63881046009 is 252747.

It is a perfect power (a square), and thus also a powerful number.

63881046009 is a `hidden beast` number, since 6 + 38 + 8 + 1 + 0 + 4 + 600 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57161637225 + 6719408784 = 239085^2 + 81972^2 .

It is not a de Polignac number, because 63881046009 - 2⁷ = 63881045881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63881046029) by changing a digit.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 1726514739 + ... + 1726514775.

Almost surely, 2^63881046009 is an apocalyptic number.

63881046009 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

63881046009 is the 252747-th square number.

63881046009 is the 126374-th centered octagonal number.

It is an amenable number.

63881046009 is a deficient number, since it is larger than the sum of its proper divisors (49226357190).

63881046009 is an equidigital number, since it uses as much as digits as its factorization.

63881046009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 63881046009 in words is "sixty-three billion, eight hundred eighty-one million, forty-six thousand, nine".