667424750126 has 4 divisors (see below), whose sum is σ = 1001137125192. Its totient is φ = 333712375062.

The previous prime is 667424750117. The next prime is 667424750171. The reversal of 667424750126 is 621057424766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621057424766 = 2 ⋅310528712383.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166856187530 + ... + 166856187533.

It is an arithmetic number, because the mean of its divisors is an integer number (250284281298).

Almost surely, 2^667424750126 is an apocalyptic number.

667424750126 is a deficient number, since it is larger than the sum of its proper divisors (333712375066).

667424750126 is a wasteful number, since it uses less digits than its factorization.

667424750126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333712375065.

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 667424750126 in words is "six hundred sixty-seven billion, four hundred twenty-four million, seven hundred fifty thousand, one hundred twenty-six".