16601398632 has 192 divisors, whose sum is σ = 57069648000. Its totient is φ = 4378323456.

The previous prime is 16601398631. The next prime is 16601398663. The reversal of 16601398632 is 23689310661.

16601398632 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 1 + 3 + 9 + 8 + 632 = 666.

It is not an unprimeable number, because it can be changed into a prime (16601398631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 223044 + ... + 288012.

It is an arithmetic number, because the mean of its divisors is an integer number (297237750).

Almost surely, 2^16601398632 is an apocalyptic number.

16601398632 is a gapful number since it is divisible by the number (12) 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 16601398632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28534824000).

16601398632 is an abundant number, since it is smaller than the sum of its proper divisors (40468249368).

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

16601398632 is a wasteful number, since it uses less digits than its factorization.

16601398632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65017 (or 64994 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 16601398632 in words is "sixteen billion, six hundred one million, three hundred ninety-eight thousand, six hundred thirty-two".