63561231000 has 192 divisors, whose sum is σ = 218480090400. Its totient is φ = 16662240000.

The previous prime is 63561230987. The next prime is 63561231001. The reversal of 63561231000 is 13216536.

63561231000 is a `hidden beast` number, since 6 + 35 + 612 + 3 + 10 + 0 + 0 = 666.

63561231000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63561231000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63561231001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 471150 + ... + 590850.

Almost surely, 2^63561231000 is an apocalyptic number.

63561231000 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 63561231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109240045200).

63561231000 is an abundant number, since it is smaller than the sum of its proper divisors (154918859400).

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

63561231000 is a wasteful number, since it uses less digits than its factorization.

63561231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119787 (or 119770 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 63561231000 its reverse (13216536), we get a palindrome (63574447536).

The spelling of 63561231000 in words is "sixty-three billion, five hundred sixty-one million, two hundred thirty-one thousand".