1617017930977 has 4 divisors (see below), whose sum is σ = 1617881263300. Its totient is φ = 1616154598656.

The previous prime is 1617017930947. The next prime is 1617017930981. The reversal of 1617017930977 is 7790397107161.

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 26717863936 + 1590300067041 = 163456^2 + 1261071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1617017930977 is a prime.

It is a super-2 number, since 2×1617017930977² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1617017930947) 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, 431663352 + ... + 431667097.

It is an arithmetic number, because the mean of its divisors is an integer number (404470315825).

Almost surely, 2^{1617017930977} is an apocalyptic number.

It is an amenable number.

1617017930977 is a deficient number, since it is larger than the sum of its proper divisors (863332323).

1617017930977 is an equidigital number, since it uses as much as digits as its factorization.

1617017930977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863332322.

The product of its (nonzero) digits is 3500658, while the sum is 58.

The spelling of 1617017930977 in words is "one trillion, six hundred seventeen billion, seventeen million, nine hundred thirty thousand, nine hundred seventy-seven".