1616505407171 has 8 divisors (see below), whose sum is σ = 1711608043824. Its totient is φ = 1521404335360.

The previous prime is 1616505407159. The next prime is 1616505407249. The reversal of 1616505407171 is 1717045056161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1616505407171 is a prime.

It is a super-2 number, since 2×1616505407171² (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 (1616505407071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242076 + ... + 2874006.

It is an arithmetic number, because the mean of its divisors is an integer number (213951005478).

Almost surely, 2^{1616505407171} is an apocalyptic number.

1616505407171 is a deficient number, since it is larger than the sum of its proper divisors (95102636653).

1616505407171 is a wasteful number, since it uses less digits than its factorization.

1616505407171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782421.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 1616505407171 in words is "one trillion, six hundred sixteen billion, five hundred five million, four hundred seven thousand, one hundred seventy-one".