663345377200 has 120 divisors (see below), whose sum is σ = 1752937666416. Its totient is φ = 241216307200.

The previous prime is 663345377147. The next prime is 663345377207. The reversal of 663345377200 is 2773543366.

It is a super-2 number, since 2×663345377200² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (663345377207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90577 + ... + 1155376.

Almost surely, 2^663345377200 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 663345377200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876468833208).

663345377200 is an abundant number, since it is smaller than the sum of its proper divisors (1089592289216).

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

663345377200 is a wasteful number, since it uses less digits than its factorization.

663345377200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246004 (or 1245971 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 46.

The spelling of 663345377200 in words is "six hundred sixty-three billion, three hundred forty-five million, three hundred seventy-seven thousand, two hundred".