17272949693 has 4 divisors (see below), whose sum is σ = 17273826108. Its totient is φ = 17272073280.

The previous prime is 17272949657. The next prime is 17272949741. The reversal of 17272949693 is 39694927271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39694927271 = 73 ⋅543766127.

It can be written as a sum of positive squares in 2 ways, for example, as 10128812164 + 7144137529 = 100642^2 + 84523^2 .

It is a cyclic number.

It is not a de Polignac number, because 17272949693 - 2¹² = 17272945597 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 (17272949633) 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, 407948 + ... + 448293.

It is an arithmetic number, because the mean of its divisors is an integer number (4318456527).

Almost surely, 2^17272949693 is an apocalyptic number.

It is an amenable number.

17272949693 is a deficient number, since it is larger than the sum of its proper divisors (876415).

17272949693 is an equidigital number, since it uses as much as digits as its factorization.

17272949693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876414.

The product of its digits is 10287648, while the sum is 59.

The spelling of 17272949693 in words is "seventeen billion, two hundred seventy-two million, nine hundred forty-nine thousand, six hundred ninety-three".