667651460422 has 4 divisors (see below), whose sum is σ = 1001477190636. Its totient is φ = 333825730210.

The previous prime is 667651460369. The next prime is 667651460453. The reversal of 667651460422 is 224064156766.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166912865104 + ... + 166912865107.

It is an arithmetic number, because the mean of its divisors is an integer number (250369297659).

Almost surely, 2^667651460422 is an apocalyptic number.

667651460422 is a deficient number, since it is larger than the sum of its proper divisors (333825730214).

667651460422 is a wasteful number, since it uses less digits than its factorization.

667651460422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333825730213.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 667651460422 in words is "six hundred sixty-seven billion, six hundred fifty-one million, four hundred sixty thousand, four hundred twenty-two".