17155117455 has 64 divisors (see below), whose sum is σ = 31797411840. Its totient is φ = 7736045184.

The previous prime is 17155117439. The next prime is 17155117471. The reversal of 17155117455 is 55471155171.

It is an interprime number because it is at equal distance from previous prime (17155117439) and next prime (17155117471).

It is not a de Polignac number, because 17155117455 - 2⁴ = 17155117439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2383372 + ... + 2390558.

It is an arithmetic number, because the mean of its divisors is an integer number (496834560).

Almost surely, 2^17155117455 is an apocalyptic number.

17155117455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

17155117455 is a deficient number, since it is larger than the sum of its proper divisors (14642294385).

17155117455 is a wasteful number, since it uses less digits than its factorization.

17155117455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7508.

The product of its digits is 122500, while the sum is 42.

The spelling of 17155117455 in words is "seventeen billion, one hundred fifty-five million, one hundred seventeen thousand, four hundred fifty-five".