63432772164 has 120 divisors (see below), whose sum is σ = 178613598240. Its totient is φ = 19565473536.

The previous prime is 63432772079. The next prime is 63432772187. The reversal of 63432772164 is 46127723436.

63432772164 is a `hidden beast` number, since 634 + 3 + 2 + 7 + 7 + 2 + 1 + 6 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 144892 + ... + 384524.

It is an arithmetic number, because the mean of its divisors is an integer number (1488446652).

Almost surely, 2^63432772164 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 63432772164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89306799120).

63432772164 is an abundant number, since it is smaller than the sum of its proper divisors (115180826076).

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

63432772164 is a wasteful number, since it uses less digits than its factorization.

63432772164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239711 (or 239700 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

The spelling of 63432772164 in words is "sixty-three billion, four hundred thirty-two million, seven hundred seventy-two thousand, one hundred sixty-four".