17272985551 has 4 divisors (see below), whose sum is σ = 17276843032. Its totient is φ = 17269128072.

The previous prime is 17272985501. The next prime is 17272985563. The reversal of 17272985551 is 15558927271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 17272985551 - 2¹¹ = 17272983503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17272985501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1922016 + ... + 1930981.

It is an arithmetic number, because the mean of its divisors is an integer number (4319210758).

Almost surely, 2^17272985551 is an apocalyptic number.

17272985551 is a deficient number, since it is larger than the sum of its proper divisors (3857481).

17272985551 is an equidigital number, since it uses as much as digits as its factorization.

17272985551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857480.

The product of its digits is 1764000, while the sum is 52.

The spelling of 17272985551 in words is "seventeen billion, two hundred seventy-two million, nine hundred eighty-five thousand, five hundred fifty-one".