68633198496 has 72 divisors (see below), whose sum is σ = 195985713924. Its totient is φ = 22782781440.

The previous prime is 68633198489. The next prime is 68633198497. The reversal of 68633198496 is 69489133686.

It can be written as a sum of positive squares in 2 ways, for example, as 58484650896 + 10148547600 = 241836^2 + 100740^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (68633198497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425011 + ... + 563826.

Almost surely, 2^68633198496 is an apocalyptic number.

It is an amenable number.

68633198496 is an abundant number, since it is smaller than the sum of its proper divisors (127352515428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68633198496 is a wasteful number, since it uses less digits than its factorization.

68633198496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989094 (or 989083 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 63.

The spelling of 68633198496 in words is "sixty-eight billion, six hundred thirty-three million, one hundred ninety-eight thousand, four hundred ninety-six".