16717232440 has 64 divisors (see below), whose sum is σ = 38538439200. Its totient is φ = 6523924992.

The previous prime is 16717232431. The next prime is 16717232443. The reversal of 16717232440 is 4423271761.

It is a self number, because there is not a number n which added to its sum of digits gives 16717232440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16717232443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357454 + ... + 401506.

Almost surely, 2^16717232440 is an apocalyptic number.

16717232440 is a gapful number since it is divisible by the number (10) 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 16717232440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19269219600).

16717232440 is an abundant number, since it is smaller than the sum of its proper divisors (21821206760).

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

16717232440 is a wasteful number, since it uses less digits than its factorization.

16717232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44296 (or 44292 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 16717232440 in words is "sixteen billion, seven hundred seventeen million, two hundred thirty-two thousand, four hundred forty".