17204772640 has 96 divisors (see below), whose sum is σ = 44383199616. Its totient is φ = 6250383360.

The previous prime is 17204772521. The next prime is 17204772649. The reversal of 17204772640 is 4627740271.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 17204772593 and 17204772602.

It is not an unprimeable number, because it can be changed into a prime (17204772649) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2148484 + ... + 2156476.

It is an arithmetic number, because the mean of its divisors is an integer number (462324996).

Almost surely, 2^17204772640 is an apocalyptic number.

17204772640 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 17204772640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22191599808).

17204772640 is an abundant number, since it is smaller than the sum of its proper divisors (27178426976).

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

17204772640 is a wasteful number, since it uses less digits than its factorization.

17204772640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9242 (or 9234 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 17204772640 in words is "seventeen billion, two hundred four million, seven hundred seventy-two thousand, six hundred forty".