68147348081473 has 4 divisors (see below), whose sum is σ = 68523852767188. Its totient is φ = 67770843395760.

The previous prime is 68147348081401. The next prime is 68147348081521. The reversal of 68147348081473 is 37418084374186.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 316689813504 + 67830658267969 = 562752^2 + 8235937^2 .

It is a cyclic number.

It is not a de Polignac number, because 68147348081473 - 2³⁷ = 68009909128001 is a prime.

It is a super-2 number, since 2×68147348081473² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68147348087473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188252342586 + ... + 188252342947.

It is an arithmetic number, because the mean of its divisors is an integer number (17130963191797).

Almost surely, 2^{68147348081473} is an apocalyptic number.

It is an amenable number.

68147348081473 is a deficient number, since it is larger than the sum of its proper divisors (376504685715).

68147348081473 is a wasteful number, since it uses less digits than its factorization.

68147348081473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376504685714.

The product of its (nonzero) digits is 86704128, while the sum is 64.

The spelling of 68147348081473 in words is "sixty-eight trillion, one hundred forty-seven billion, three hundred forty-eight million, eighty-one thousand, four hundred seventy-three".