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68132672429 = 1391551131601
BaseRepresentation
bin111111011101000001…
…100001001110101101
320111212021122101000012
4333131001201032231
52104013431004204
651144423343005
74631251105643
oct773501411655
9214767571005
1068132672429
1126993132248
12112555b1a65
13656a6132b3
143424a15193
151b8b70876e
hexfdd0613ad

68132672429 has 8 divisors (see below), whose sum is σ = 68629431360. Its totient is φ = 67636008000.

The previous prime is 68132672407. The next prime is 68132672441. The reversal of 68132672429 is 92427623186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68132672429 is a prime.

It is a super-2 number, since 2×681326724292 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68132672479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2140229 + ... + 2171829.

It is an arithmetic number, because the mean of its divisors is an integer number (8578678920).

Almost surely, 268132672429 is an apocalyptic number.

It is an amenable number.

68132672429 is a deficient number, since it is larger than the sum of its proper divisors (496758931).

68132672429 is a wasteful number, since it uses less digits than its factorization.

68132672429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47251.

The product of its digits is 1741824, while the sum is 50.

The spelling of 68132672429 in words is "sixty-eight billion, one hundred thirty-two million, six hundred seventy-two thousand, four hundred twenty-nine".

Divisors: 1 139 15511 31601 2156029 4392539 490163111 68132672429