668526659093376 has 128 divisors (see below), whose sum is σ = 2089145809850400. Its totient is φ = 209733853814784.

The previous prime is 668526659093357. The next prime is 668526659093387. The reversal of 668526659093376 is 673390956625866.

668526659093376 is a `hidden beast` number, since 6 + 6 + 8 + 52 + 66 + 59 + 0 + 93 + 376 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 668526659093295 and 668526659093304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5689336155 + ... + 5689453658.

Almost surely, 2^{668526659093376} is an apocalyptic number.

It is an amenable number.

668526659093376 is an abundant number, since it is smaller than the sum of its proper divisors (1420619150757024).

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

668526659093376 is a wasteful number, since it uses less digits than its factorization.

668526659093376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11378789853 (or 11378789835 counting only the distinct ones).

The product of its (nonzero) digits is 15872371200, while the sum is 81.

The spelling of 668526659093376 in words is "six hundred sixty-eight trillion, five hundred twenty-six billion, six hundred fifty-nine million, ninety-three thousand, three hundred seventy-six".