17142756352457 has 4 divisors (see below), whose sum is σ = 17142979709076. Its totient is φ = 17142532995840.

The previous prime is 17142756352429. The next prime is 17142756352459. The reversal of 17142756352457 is 75425365724171.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5595665946256 + 11547090406201 = 2365516^2 + 3398101^2 .

It is a cyclic number.

It is not a de Polignac number, because 17142756352457 - 2¹⁴ = 17142756336073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17142756352396 and 17142756352405.

It is not an unprimeable number, because it can be changed into a prime (17142756352459) 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, 111563144 + ... + 111716697.

It is an arithmetic number, because the mean of its divisors is an integer number (4285744927269).

Almost surely, 2^{17142756352457} is an apocalyptic number.

It is an amenable number.

17142756352457 is a deficient number, since it is larger than the sum of its proper divisors (223356619).

17142756352457 is an equidigital number, since it uses as much as digits as its factorization.

17142756352457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223356618.

The product of its digits is 49392000, while the sum is 59.

The spelling of 17142756352457 in words is "seventeen trillion, one hundred forty-two billion, seven hundred fifty-six million, three hundred fifty-two thousand, four hundred fifty-seven".