663530434100 has 72 divisors (see below), whose sum is σ = 1464310111488. Its totient is φ = 260910460800.

The previous prime is 663530434093. The next prime is 663530434111. The reversal of 663530434100 is 1434035366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10845797 + ... + 10906803.

Almost surely, 2^663530434100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663530434100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732155055744).

663530434100 is an abundant number, since it is smaller than the sum of its proper divisors (800779677388).

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

663530434100 is a wasteful number, since it uses less digits than its factorization.

663530434100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62865 (or 62858 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 663530434100 its reverse (1434035366), we get a palindrome (664964469466).

The spelling of 663530434100 in words is "six hundred sixty-three billion, five hundred thirty million, four hundred thirty-four thousand, one hundred".