667473375720245 has 16 divisors (see below), whose sum is σ = 815990572537920. Its totient is φ = 523995837060864.

The previous prime is 667473375720227. The next prime is 667473375720289. The reversal of 667473375720245 is 542027573374766.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 667473375720245 - 2⁴⁴ = 649881189675829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2009266964 + ... + 2009599133.

It is an arithmetic number, because the mean of its divisors is an integer number (50999410783620).

Almost surely, 2^{667473375720245} is an apocalyptic number.

It is an amenable number.

667473375720245 is a deficient number, since it is larger than the sum of its proper divisors (148517196817675).

667473375720245 is a wasteful number, since it uses less digits than its factorization.

667473375720245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018866724.

The product of its (nonzero) digits is 1244678400, while the sum is 68.

The spelling of 667473375720245 in words is "six hundred sixty-seven trillion, four hundred seventy-three billion, three hundred seventy-five million, seven hundred twenty thousand, two hundred forty-five".