63405450436 has 12 divisors (see below), whose sum is σ = 111572575660. Its totient is φ = 31527571680.

The previous prime is 63405450403. The next prime is 63405450473.

It is a happy number.

63405450436 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 7942374400 + 55463076036 = 89120^2 + 235506^2 .

It is a super-2 number, since 2×63405450436² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43787571 + ... + 43789018.

Almost surely, 2^63405450436 is an apocalyptic number.

It is an amenable number.

63405450436 is a deficient number, since it is larger than the sum of its proper divisors (48167125224).

63405450436 is a wasteful number, since it uses less digits than its factorization.

63405450436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87576774 (or 87576772 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 63405450436 in words is "sixty-three billion, four hundred five million, four hundred fifty thousand, four hundred thirty-six".