63303394250646 has 144 divisors (see below), whose sum is σ = 153369735114960. Its totient is φ = 18851316105600.

The previous prime is 63303394250627. The next prime is 63303394250647. The reversal of 63303394250646 is 64605249330336.

63303394250646 is a `hidden beast` number, since 6 + 3 + 3 + 0 + 3 + 3 + 94 + 2 + 506 + 46 = 666.

It is a super-3 number, since 3×63303394250646³ (a number of 42 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63303394250592 and 63303394250601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63303394250647) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 147124701 + ... + 147554343.

It is an arithmetic number, because the mean of its divisors is an integer number (1065067604965).

Almost surely, 2^{63303394250646} is an apocalyptic number.

63303394250646 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 63303394250646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76684867557480).

63303394250646 is an abundant number, since it is smaller than the sum of its proper divisors (90066340864314).

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

63303394250646 is a wasteful number, since it uses less digits than its factorization.

63303394250646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430843 (or 430829 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 54.

The spelling of 63303394250646 in words is "sixty-three trillion, three hundred three billion, three hundred ninety-four million, two hundred fifty thousand, six hundred forty-six".