68054844567890 has 8 divisors (see below), whose sum is σ = 122498720222220. Its totient is φ = 27221937827152.

The previous prime is 68054844567883. The next prime is 68054844567907. The reversal of 68054844567890 is 9876544845086.

It can be written as a sum of positive squares in 2 ways, for example, as 59164387201921 + 8890457365969 = 7691839^2 + 2981687^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3402742228385 + ... + 3402742228404.

Almost surely, 2^{68054844567890} is an apocalyptic number.

68054844567890 is a deficient number, since it is larger than the sum of its proper divisors (54443875654330).

68054844567890 is a wasteful number, since it uses less digits than its factorization.

68054844567890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6805484456796.

The product of its (nonzero) digits is 1857945600, while the sum is 74.

The spelling of 68054844567890 in words is "sixty-eight trillion, fifty-four billion, eight hundred forty-four million, five hundred sixty-seven thousand, eight hundred ninety".