68216892408 has 48 divisors (see below), whose sum is σ = 211147525680. Its totient is φ = 19490540544.

The previous prime is 68216892407. The next prime is 68216892449. The reversal of 68216892408 is 80429861286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68216892407) 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, 67674985 + ... + 67675992.

It is an arithmetic number, because the mean of its divisors is an integer number (4398906785).

Almost surely, 2^68216892408 is an apocalyptic number.

It is an amenable number.

68216892408 is an abundant number, since it is smaller than the sum of its proper divisors (142930633272).

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

68216892408 is a wasteful number, since it uses less digits than its factorization.

68216892408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135350996 (or 135350989 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 68216892408 in words is "sixty-eight billion, two hundred sixteen million, eight hundred ninety-two thousand, four hundred eight".