63311554501440 has 448 divisors, whose sum is σ = 243385987866624. Its totient is φ = 13612017549312.

The previous prime is 63311554501427. The next prime is 63311554501441. The reversal of 63311554501440 is 4410545511336.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 63311554501392 and 63311554501401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63311554501441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 196674697 + ... + 196996343.

Almost surely, 2^{63311554501440} is an apocalyptic number.

63311554501440 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 63311554501440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121692993933312).

63311554501440 is an abundant number, since it is smaller than the sum of its proper divisors (180074433365184).

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

63311554501440 is a wasteful number, since it uses less digits than its factorization.

63311554501440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323414 (or 323404 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 63311554501440 in words is "sixty-three trillion, three hundred eleven billion, five hundred fifty-four million, five hundred one thousand, four hundred forty".