63973206466 has 16 divisors (see below), whose sum is σ = 103601655864. Its totient is φ = 29451717504.

The previous prime is 63973206461. The next prime is 63973206487. The reversal of 63973206466 is 66460237936.

63973206466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38637799225 + 25335407241 = 196565^2 + 159171^2 .

It is a super-2 number, since 2×63973206466² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63973206461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3088555 + ... + 3109198.

Almost surely, 2^63973206466 is an apocalyptic number.

63973206466 is a deficient number, since it is larger than the sum of its proper divisors (39628449398).

63973206466 is a wasteful number, since it uses less digits than its factorization.

63973206466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6198165.

The product of its (nonzero) digits is 5878656, while the sum is 52.

The spelling of 63973206466 in words is "sixty-three billion, nine hundred seventy-three million, two hundred six thousand, four hundred sixty-six".