68205463792 has 20 divisors (see below), whose sum is σ = 133188626176. Its totient is φ = 33834205440.

The previous prime is 68205463757. The next prime is 68205463841. The reversal of 68205463792 is 29736450286.

It is a pancake number, because a pancake can be divided into 68205463792 parts by 369338 straight cuts.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16780809 + ... + 16784872.

Almost surely, 2^68205463792 is an apocalyptic number.

It is an amenable number.

68205463792 is a deficient number, since it is larger than the sum of its proper divisors (64983162384).

68205463792 is a wasteful number, since it uses less digits than its factorization.

68205463792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33565816 (or 33565810 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 68205463792 in words is "sixty-eight billion, two hundred five million, four hundred sixty-three thousand, seven hundred ninety-two".