667901117226 has 16 divisors (see below), whose sum is σ = 1526631125184. Its totient is φ = 190828890624.

The previous prime is 667901117209. The next prime is 667901117231. The reversal of 667901117226 is 622711109766.

It is a super-4 number, since 4×667901117226⁴ (a number of 48 digits) contains 4444 as substring.

It is a Curzon 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, 7951203735 + ... + 7951203818.

It is an arithmetic number, because the mean of its divisors is an integer number (95414445324).

Almost surely, 2^667901117226 is an apocalyptic number.

667901117226 is an abundant number, since it is smaller than the sum of its proper divisors (858730007958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667901117226 is a wasteful number, since it uses less digits than its factorization.

667901117226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15902407565.

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 667901117226 in words is "six hundred sixty-seven billion, nine hundred one million, one hundred seventeen thousand, two hundred twenty-six".