232122720648 has 128 divisors (see below), whose sum is σ = 716941209600. Its totient is φ = 60986255616.

The previous prime is 232122720631. The next prime is 232122720671. The reversal of 232122720648 is 846027221232.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372333 + ... + 776451.

It is an arithmetic number, because the mean of its divisors is an integer number (5601103200).

Almost surely, 2^232122720648 is an apocalyptic number.

232122720648 is a gapful number since it is divisible by the number (28) 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 232122720648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358470604800).

232122720648 is an abundant number, since it is smaller than the sum of its proper divisors (484818488952).

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

232122720648 is a wasteful number, since it uses less digits than its factorization.

232122720648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404411 (or 404407 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 232122720648 in words is "two hundred thirty-two billion, one hundred twenty-two million, seven hundred twenty thousand, six hundred forty-eight".