63431705232 has 240 divisors, whose sum is σ = 213966305280. Its totient is φ = 17815718016.

The previous prime is 63431705179. The next prime is 63431705269. The reversal of 63431705232 is 23250713436.

63431705232 is a `hidden beast` number, since 6 + 34 + 31 + 70 + 523 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1585993 + ... + 1625495.

It is an arithmetic number, because the mean of its divisors is an integer number (891526272).

Almost surely, 2^63431705232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63431705232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106983152640).

63431705232 is an abundant number, since it is smaller than the sum of its proper divisors (150534600048).

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

63431705232 is a wasteful number, since it uses less digits than its factorization.

63431705232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39592 (or 39574 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The spelling of 63431705232 in words is "sixty-three billion, four hundred thirty-one million, seven hundred five thousand, two hundred thirty-two".