671616108045 has 96 divisors (see below), whose sum is σ = 1254736604160. Its totient is φ = 331124428800.

The previous prime is 671616108041. The next prime is 671616108049. The reversal of 671616108045 is 540801616176.

It is an interprime number because it is at equal distance from previous prime (671616108041) and next prime (671616108049).

It is not a de Polignac number, because 671616108045 - 2² = 671616108041 is a prime.

It is a super-2 number, since 2×671616108045² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671616108041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10248172 + ... + 10313498.

It is an arithmetic number, because the mean of its divisors is an integer number (13070172960).

Almost surely, 2^671616108045 is an apocalyptic number.

It is an amenable number.

671616108045 is a deficient number, since it is larger than the sum of its proper divisors (583120496115).

671616108045 is a wasteful number, since it uses less digits than its factorization.

671616108045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65595 (or 65592 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 671616108045 in words is "six hundred seventy-one billion, six hundred sixteen million, one hundred eight thousand, forty-five".