17272740557 has 2 divisors, whose sum is σ = 17272740558. Its totient is φ = 17272740556.

The previous prime is 17272740553. The next prime is 17272740587. The reversal of 17272740557 is 75504727271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14588049961 + 2684690596 = 120781^2 + 51814^2 .

It is a cyclic number.

It is not a de Polignac number, because 17272740557 - 2² = 17272740553 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17272740553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8636370278 + 8636370279.

It is an arithmetic number, because the mean of its divisors is an integer number (8636370279).

Almost surely, 2^17272740557 is an apocalyptic number.

It is an amenable number.

17272740557 is a deficient number, since it is larger than the sum of its proper divisors (1).

17272740557 is an equidigital number, since it uses as much as digits as its factorization.

17272740557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960400, while the sum is 47.

The spelling of 17272740557 in words is "seventeen billion, two hundred seventy-two million, seven hundred forty thousand, five hundred fifty-seven".