63446464436 has 48 divisors (see below), whose sum is σ = 118723207680. Its totient is φ = 29601617760.

The previous prime is 63446464399. The next prime is 63446464441.

63446464436 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×63446464436² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666455 + ... + 755681.

It is an arithmetic number, because the mean of its divisors is an integer number (2473400160).

Almost surely, 2^63446464436 is an apocalyptic number.

It is an amenable number.

63446464436 is a deficient number, since it is larger than the sum of its proper divisors (55276743244).

63446464436 is a wasteful number, since it uses less digits than its factorization.

63446464436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89444 (or 89442 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 50.

The spelling of 63446464436 in words is "sixty-three billion, four hundred forty-six million, four hundred sixty-four thousand, four hundred thirty-six".