667139709455 has 8 divisors (see below), whose sum is σ = 800669306400. Its totient is φ = 533643997536.

The previous prime is 667139709433. The next prime is 667139709469. The reversal of 667139709455 is 554907931766.

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

It is a cyclic number.

It is not a de Polignac number, because 667139709455 - 2⁶ = 667139709391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8427920 + ... + 8506709.

It is an arithmetic number, because the mean of its divisors is an integer number (100083663300).

Almost surely, 2^667139709455 is an apocalyptic number.

667139709455 is a deficient number, since it is larger than the sum of its proper divisors (133529596945).

667139709455 is a wasteful number, since it uses less digits than its factorization.

667139709455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16942513.

The product of its (nonzero) digits is 42865200, while the sum is 62.

The spelling of 667139709455 in words is "six hundred sixty-seven billion, one hundred thirty-nine million, seven hundred nine thousand, four hundred fifty-five".