16789957632 has 264 divisors, whose sum is σ = 55694055456. Its totient is φ = 4772265984.

The previous prime is 16789957621. The next prime is 16789957651. The reversal of 16789957632 is 23675998761.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 16789957632.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15030738 + ... + 15031854.

Almost surely, 2^16789957632 is an apocalyptic number.

16789957632 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 16789957632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27847027728).

16789957632 is an abundant number, since it is smaller than the sum of its proper divisors (38904097824).

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

16789957632 is a wasteful number, since it uses less digits than its factorization.

16789957632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383 (or 1362 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 16789957632 in words is "sixteen billion, seven hundred eighty-nine million, nine hundred fifty-seven thousand, six hundred thirty-two".