1617614170561 has 4 divisors (see below), whose sum is σ = 1641757665712. Its totient is φ = 1593470675412.

The previous prime is 1617614170481. The next prime is 1617614170577. The reversal of 1617614170561 is 1650714167161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1617614170561 - 2³⁹ = 1067858356673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1617614170261) 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, 12071747475 + ... + 12071747608.

It is an arithmetic number, because the mean of its divisors is an integer number (410439416428).

Almost surely, 2^{1617614170561} is an apocalyptic number.

It is an amenable number.

1617614170561 is a deficient number, since it is larger than the sum of its proper divisors (24143495151).

1617614170561 is an equidigital number, since it uses as much as digits as its factorization.

1617614170561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24143495150.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 1617614170561 in words is "one trillion, six hundred seventeen billion, six hundred fourteen million, one hundred seventy thousand, five hundred sixty-one".