667222278405 has 8 divisors (see below), whose sum is σ = 1067555645472. Its totient is φ = 355851881808.

The previous prime is 667222278397. The next prime is 667222278407. The reversal of 667222278405 is 504872222766.

It is a happy number.

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

It is not a de Polignac number, because 667222278405 - 2³ = 667222278397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667222278407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22240742599 + ... + 22240742628.

It is an arithmetic number, because the mean of its divisors is an integer number (133444455684).

Almost surely, 2^667222278405 is an apocalyptic number.

It is an amenable number.

667222278405 is a deficient number, since it is larger than the sum of its proper divisors (400333367067).

667222278405 is a wasteful number, since it uses less digits than its factorization.

667222278405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44481485235.

The product of its (nonzero) digits is 4515840, while the sum is 51.

The spelling of 667222278405 in words is "six hundred sixty-seven billion, two hundred twenty-two million, two hundred seventy-eight thousand, four hundred five".