63126620442 has 24 divisors (see below), whose sum is σ = 137371621140. Its totient is φ = 20950318080.

The previous prime is 63126620437. The next prime is 63126620443. The reversal of 63126620442 is 24402662136.

63126620442 is a `hidden beast` number, since 6 + 3 + 1 + 26 + 620 + 4 + 4 + 2 = 666.

63126620442 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 2 ways, for example, as 43739121321 + 19387499121 = 209139^2 + 139239^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63126620397 and 63126620406.

It is not an unprimeable number, because it can be changed into a prime (63126620443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7653159 + ... + 7661402.

Almost surely, 2^63126620442 is an apocalyptic number.

63126620442 is an abundant number, since it is smaller than the sum of its proper divisors (74245000698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63126620442 is a wasteful number, since it uses less digits than its factorization.

63126620442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15314798 (or 15314795 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 63126620442 in words is "sixty-three billion, one hundred twenty-six million, six hundred twenty thousand, four hundred forty-two".