68454263808 has 330 divisors, whose sum is σ = 237806270196. Its totient is φ = 19557199872.

The previous prime is 68454263807. The next prime is 68454263833. The reversal of 68454263808 is 80836245486.

68454263808 is a `hidden beast` number, since 68 + 4 + 542 + 6 + 38 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (68454263807) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4055835 + ... + 4072677.

Almost surely, 2^68454263808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68454263808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118903135098).

68454263808 is an abundant number, since it is smaller than the sum of its proper divisors (169352006388).

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

68454263808 is a wasteful number, since it uses less digits than its factorization.

68454263808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16889 (or 16855 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 54.

The spelling of 68454263808 in words is "sixty-eight billion, four hundred fifty-four million, two hundred sixty-three thousand, eight hundred eight".