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68687800272 = 24327132439377
BaseRepresentation
bin111111111110000111…
…001010011111010000
320120021222012210020200
4333332013022133100
52111133034102042
651315453535200
74651101445320
oct777607123720
9216258183220
1068687800272
1127148521a93
121138b4a4500
13662862a800
14347863b280
151bc0310c4c
hexffe1ca7d0

68687800272 has 360 divisors, whose sum is σ = 243449578944. Its totient is φ = 17692286976.

The previous prime is 68687800261. The next prime is 68687800327. The reversal of 68687800272 is 27200878686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7320448 + ... + 7329824.

Almost surely, 268687800272 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 68687800272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121724789472).

68687800272 is an abundant number, since it is smaller than the sum of its proper divisors (174761778672).

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

68687800272 is a wasteful number, since it uses less digits than its factorization.

68687800272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9467 (or 9445 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 68687800272 in words is "sixty-eight billion, six hundred eighty-seven million, eight hundred thousand, two hundred seventy-two".