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68633671260 = 2235711171078167
BaseRepresentation
bin111111111010111000…
…101011011001011100
320120011012100202012110
4333322320223121130
52111030204440020
651310241434020
74646543402640
oct777270533134
9216135322173
1068633671260
112711aa11070
121137533b910
13661a357bcb
14347138ac20
151bba6bc8e0
hexffae2b65c

68633671260 has 384 divisors, whose sum is σ = 256089931776. Its totient is φ = 13295554560.

The previous prime is 68633671259. The next prime is 68633671279. The reversal of 68633671260 is 6217633686.

It is a happy number.

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 127 ways as a sum of consecutive naturals, for example, 8399697 + ... + 8407863.

It is an arithmetic number, because the mean of its divisors is an integer number (666900864).

Almost surely, 268633671260 is an apocalyptic number.

68633671260 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 68633671260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128044965888).

68633671260 is an abundant number, since it is smaller than the sum of its proper divisors (187456260516).

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

68633671260 is a wasteful number, since it uses less digits than its factorization.

68633671260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321 (or 8319 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 68633671260 in words is "sixty-eight billion, six hundred thirty-three million, six hundred seventy-one thousand, two hundred sixty".