63240491520 has 240 divisors, whose sum is σ = 219350514240. Its totient is φ = 16838664192.

The previous prime is 63240491477. The next prime is 63240491527. The reversal of 63240491520 is 2519404236.

It is a happy number.

63240491520 is a `hidden beast` number, since 6 + 3 + 2 + 40 + 4 + 91 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is not an unprimeable number, because it can be changed into a prime (63240491527) 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, 19052421 + ... + 19055739.

It is an arithmetic number, because the mean of its divisors is an integer number (913960476).

Almost surely, 2^63240491520 is an apocalyptic number.

63240491520 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 63240491520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109675257120).

63240491520 is an abundant number, since it is smaller than the sum of its proper divisors (156110022720).

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

63240491520 is a wasteful number, since it uses less digits than its factorization.

63240491520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175 (or 4156 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 63240491520 its reverse (2519404236), we get a palindrome (65759895756).

The spelling of 63240491520 in words is "sixty-three billion, two hundred forty million, four hundred ninety-one thousand, five hundred twenty".