63125071906 has 16 divisors (see below), whose sum is σ = 101977062264. Its totient is φ = 29132993664.

The previous prime is 63125071883. The next prime is 63125071909. The reversal of 63125071906 is 60917052136.

It can be written as a sum of positive squares in 4 ways, for example, as 8903620881 + 54221451025 = 94359^2 + 232855^2 .

It is not an unprimeable number, because it can be changed into a prime (63125071909) 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, 480046 + ... + 597238.

Almost surely, 2^63125071906 is an apocalyptic number.

63125071906 is a deficient number, since it is larger than the sum of its proper divisors (38851990358).

63125071906 is a wasteful number, since it uses less digits than its factorization.

63125071906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137925.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 63125071906 in words is "sixty-three billion, one hundred twenty-five million, seventy-one thousand, nine hundred six".