67421644594496 has 14 divisors (see below), whose sum is σ = 133789825992330. Its totient is φ = 33710822297216.

The previous prime is 67421644594417. The next prime is 67421644594529. The reversal of 67421644594496 is 69449544612476.

It can be written as a sum of positive squares in only one way, i.e., 49947238136896 + 17474406457600 = 7067336^2 + 4180240^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526731598331 + ... + 526731598458.

Almost surely, 2^{67421644594496} is an apocalyptic number.

It is an amenable number.

67421644594496 is a deficient number, since it is larger than the sum of its proper divisors (66368181397834).

67421644594496 is a wasteful number, since it uses less digits than its factorization.

67421644594496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053463196801 (or 1053463196791 counting only the distinct ones).

The product of its digits is 1254113280, while the sum is 71.

The spelling of 67421644594496 in words is "sixty-seven trillion, four hundred twenty-one billion, six hundred forty-four million, five hundred ninety-four thousand, four hundred ninety-six".