1617161517575 has 6 divisors (see below), whose sum is σ = 2005280281824. Its totient is φ = 1293729214040.

The previous prime is 1617161517557. The next prime is 1617161517583. The reversal of 1617161517575 is 5757151617161.

It is not a de Polignac number, because 1617161517575 - 2¹² = 1617161513479 is a prime.

It is a super-2 number, since 2×1617161517575² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32343230327 + ... + 32343230376.

It is an arithmetic number, because the mean of its divisors is an integer number (334213380304).

Almost surely, 2^{1617161517575} is an apocalyptic number.

1617161517575 is a deficient number, since it is larger than the sum of its proper divisors (388118764249).

1617161517575 is an equidigital number, since it uses as much as digits as its factorization.

1617161517575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64686460713 (or 64686460708 counting only the distinct ones).

The product of its digits is 1543500, while the sum is 53.

The spelling of 1617161517575 in words is "one trillion, six hundred seventeen billion, one hundred sixty-one million, five hundred seventeen thousand, five hundred seventy-five".