63446423040 has 1920 divisors, whose sum is σ = 310345136640. Its totient is φ = 12076646400.

The previous prime is 63446422997. The next prime is 63446423063. The reversal of 63446423040 is 4032464436.

63446423040 is a `hidden beast` number, since 6 + 3 + 4 + 4 + 642 + 3 + 0 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 63446422986 and 63446423004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 484323775 + ... + 484323905.

It is an arithmetic number, because the mean of its divisors is an integer number (161638092).

Almost surely, 2^63446423040 is an apocalyptic number.

63446423040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63446423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155172568320).

63446423040 is an abundant number, since it is smaller than the sum of its proper divisors (246898713600).

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

63446423040 is a wasteful number, since it uses less digits than its factorization.

63446423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 63446423040 its reverse (4032464436), we get a palindrome (67478887476).

The spelling of 63446423040 in words is "sixty-three billion, four hundred forty-six million, four hundred twenty-three thousand, forty".