68902428460066 has 8 divisors (see below), whose sum is σ = 106146984384540. Its totient is φ = 33520100331888.

The previous prime is 68902428460027. The next prime is 68902428460069. The reversal of 68902428460066 is 66006482420986.

It can be written as a sum of positive squares in 2 ways, for example, as 61960968797841 + 6941459662225 = 7871529^2 + 2634665^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 68902428459986 and 68902428460013.

It is not an unprimeable number, because it can be changed into a prime (68902428460069) 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, 465556948981 + ... + 465556949128.

Almost surely, 2^{68902428460066} is an apocalyptic number.

68902428460066 is a deficient number, since it is larger than the sum of its proper divisors (37244555924474).

68902428460066 is a wasteful number, since it uses less digits than its factorization.

68902428460066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931113898148.

The product of its (nonzero) digits is 47775744, while the sum is 61.

The spelling of 68902428460066 in words is "sixty-eight trillion, nine hundred two billion, four hundred twenty-eight million, four hundred sixty thousand, sixty-six".