63805557445 has 32 divisors (see below), whose sum is σ = 94171044096. Its totient is φ = 40503628800.

The previous prime is 63805557443. The next prime is 63805557449. The reversal of 63805557445 is 54475550836.

It is not a de Polignac number, because 63805557445 - 2¹ = 63805557443 is a prime.

It is a super-3 number, since 3×63805557445³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63805557392 and 63805557401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63805557443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842691 + ... + 915280.

It is an arithmetic number, because the mean of its divisors is an integer number (2942845128).

Almost surely, 2^63805557445 is an apocalyptic number.

It is an amenable number.

63805557445 is a deficient number, since it is larger than the sum of its proper divisors (30365486651).

63805557445 is a wasteful number, since it uses less digits than its factorization.

63805557445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758061.

The product of its (nonzero) digits is 10080000, while the sum is 52.

The spelling of 63805557445 in words is "sixty-three billion, eight hundred five million, five hundred fifty-seven thousand, four hundred forty-five".