17272720540 has 24 divisors (see below), whose sum is σ = 36278161920. Its totient is φ = 6908050368.

The previous prime is 17272720529. The next prime is 17272720567. The reversal of 17272720540 is 4502727271.

It is a self number, because there is not a number n which added to its sum of digits gives 17272720540.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 79434 + ... + 202126.

It is an arithmetic number, because the mean of its divisors is an integer number (1511590080).

Almost surely, 2^17272720540 is an apocalyptic number.

17272720540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17272720540 is an abundant number, since it is smaller than the sum of its proper divisors (19005441380).

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

17272720540 is a wasteful number, since it uses less digits than its factorization.

17272720540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129741 (or 129739 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 37.

The spelling of 17272720540 in words is "seventeen billion, two hundred seventy-two million, seven hundred twenty thousand, five hundred forty".