663321503040 has 224 divisors, whose sum is σ = 2484552474624. Its totient is φ = 146725447680.

The previous prime is 663321503011. The next prime is 663321503041. The reversal of 663321503040 is 40305123366.

It is a tau number, because it is divible by the number of its divisors (224).

It is a junction number, because it is equal to n+sod(n) for n = 663321502992 and 663321503010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663321503041) 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, 1383754 + ... + 1800393.

Almost surely, 2^663321503040 is an apocalyptic number.

663321503040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663321503040 is an abundant number, since it is smaller than the sum of its proper divisors (1821230971584).

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

663321503040 is a wasteful number, since it uses less digits than its factorization.

663321503040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3184205 (or 3184195 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The spelling of 663321503040 in words is "six hundred sixty-three billion, three hundred twenty-one million, five hundred three thousand, forty".