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68892554189 = 2343531314317
BaseRepresentation
bin100000000101001010…
…0001111001111001101
320120211020111100211002
41000022110033033031
52112042443213224
651352050310045
74656136022444
oct1001224171715
9216736440732
1068892554189
11272430616a8
1211427b88325
13665bb8a884
1434978d9d5b
151bd32a89ae
hex100a50f3cd

68892554189 has 16 divisors (see below), whose sum is σ = 74947669632. Its totient is φ = 63150255168.

The previous prime is 68892554153. The next prime is 68892554201. The reversal of 68892554189 is 98145529886.

It is a cyclic number.

It is not a de Polignac number, because 68892554189 - 224 = 68875776973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68892554389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604742 + ... + 709575.

It is an arithmetic number, because the mean of its divisors is an integer number (4684229352).

Almost surely, 268892554189 is an apocalyptic number.

It is an amenable number.

68892554189 is a deficient number, since it is larger than the sum of its proper divisors (6055115443).

68892554189 is a wasteful number, since it uses less digits than its factorization.

68892554189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314436.

The product of its digits is 49766400, while the sum is 65.

The spelling of 68892554189 in words is "sixty-eight billion, eight hundred ninety-two million, five hundred fifty-four thousand, one hundred eighty-nine".

Divisors: 1 23 43 53 989 1219 2279 52417 1314317 30229291 56515631 69658801 1299859513 1602152423 2995328443 68892554189