667441612005 has 64 divisors (see below), whose sum is σ = 1306474444800. Its totient is φ = 284158091520.

The previous prime is 667441612003. The next prime is 667441612007. The reversal of 667441612005 is 500216144766.

It is an interprime number because it is at equal distance from previous prime (667441612003) and next prime (667441612007).

It is not a de Polignac number, because 667441612005 - 2¹ = 667441612003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667441612003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2717526 + ... + 2952935.

It is an arithmetic number, because the mean of its divisors is an integer number (20413663200).

Almost surely, 2^667441612005 is an apocalyptic number.

It is an amenable number.

667441612005 is a deficient number, since it is larger than the sum of its proper divisors (639032832795).

667441612005 is a wasteful number, since it uses less digits than its factorization.

667441612005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670554.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 667441612005 in words is "six hundred sixty-seven billion, four hundred forty-one million, six hundred twelve thousand, five".