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68104930800 = 24352172434567
BaseRepresentation
bin111111011011010111…
…101100010111110000
320111210100102221122110
4333123113230113300
52103434330241200
651141553005320
74630463234364
oct773327542760
9214710387573
1068104930800
1126979504585
1211248253840
13656494c22a
1434210732a4
151b89078b50
hexfdb5ec5f0

68104930800 has 360 divisors, whose sum is σ = 237192267136. Its totient is φ = 16691834880.

The previous prime is 68104930787. The next prime is 68104930837. The reversal of 68104930800 is 803940186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14910117 + ... + 14914683.

Almost surely, 268104930800 is an apocalyptic number.

68104930800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68104930800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118596133568).

68104930800 is an abundant number, since it is smaller than the sum of its proper divisors (169087336336).

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

68104930800 is a wasteful number, since it uses less digits than its factorization.

68104930800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665 (or 4637 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 68104930800 in words is "sixty-eight billion, one hundred four million, nine hundred thirty thousand, eight hundred".