667212457265 has 8 divisors (see below), whose sum is σ = 800729680128. Its totient is φ = 533720144880.

The previous prime is 667212457243. The next prime is 667212457271. The reversal of 667212457265 is 562754212766.

667212457265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 667212457265 - 2⁶ = 667212457201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6168641 + ... + 6275870.

It is an arithmetic number, because the mean of its divisors is an integer number (100091210016).

Almost surely, 2^667212457265 is an apocalyptic number.

It is an amenable number.

667212457265 is a deficient number, since it is larger than the sum of its proper divisors (133517222863).

667212457265 is a wasteful number, since it uses less digits than its factorization.

667212457265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12455239.

The product of its digits is 8467200, while the sum is 53.

The spelling of 667212457265 in words is "six hundred sixty-seven billion, two hundred twelve million, four hundred fifty-seven thousand, two hundred sixty-five".