667212270505 has 16 divisors (see below), whose sum is σ = 873798637824. Its totient is φ = 485046887680.

The previous prime is 667212270457. The next prime is 667212270547. The reversal of 667212270505 is 505072212766.

It is not a de Polignac number, because 667212270505 - 2¹³ = 667212262313 is a prime.

It is a Duffinian 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, 2344192 + ... + 2613361.

It is an arithmetic number, because the mean of its divisors is an integer number (54612414864).

Almost surely, 2^667212270505 is an apocalyptic number.

It is an amenable number.

667212270505 is a deficient number, since it is larger than the sum of its proper divisors (206586367319).

667212270505 is a wasteful number, since it uses less digits than its factorization.

667212270505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960016.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 667212270505 in words is "six hundred sixty-seven billion, two hundred twelve million, two hundred seventy thousand, five hundred five".