68147440736770 has 16 divisors (see below), whose sum is σ = 122785535747448. Its totient is φ = 27232277978880.

The previous prime is 68147440736731. The next prime is 68147440736911. The reversal of 68147440736770 is 7763704474186.

It can be written as a sum of positive squares in 4 ways, for example, as 48396607092289 + 19750833644481 = 6956767^2 + 4444191^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3337278759 + ... + 3337299178.

Almost surely, 2^{68147440736770} is an apocalyptic number.

68147440736770 is a deficient number, since it is larger than the sum of its proper divisors (54638095010678).

68147440736770 is a wasteful number, since it uses less digits than its factorization.

68147440736770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674578965.

The product of its (nonzero) digits is 132765696, while the sum is 64.

The spelling of 68147440736770 in words is "sixty-eight trillion, one hundred forty-seven billion, four hundred forty million, seven hundred thirty-six thousand, seven hundred seventy".