68484501681 has 8 divisors (see below), whose sum is σ = 92120746080. Its totient is φ = 45252295872.

The previous prime is 68484501661. The next prime is 68484501691. The reversal of 68484501681 is 18610548486.

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

It is not a de Polignac number, because 68484501681 - 2³⁴ = 51304632497 is a prime.

It is a super-2 number, since 2×68484501681² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68484501661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101009251 + ... + 101009928.

It is an arithmetic number, because the mean of its divisors is an integer number (11515093260).

Almost surely, 2^68484501681 is an apocalyptic number.

It is an amenable number.

68484501681 is a deficient number, since it is larger than the sum of its proper divisors (23636244399).

68484501681 is a wasteful number, since it uses less digits than its factorization.

68484501681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202019295.

The product of its (nonzero) digits is 1474560, while the sum is 51.

The spelling of 68484501681 in words is "sixty-eight billion, four hundred eighty-four million, five hundred one thousand, six hundred eighty-one".