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68212538104 = 2316751057289
BaseRepresentation
bin111111100001110010…
…001011101011111000
320112001211220222010011
4333201302023223320
52104144402204404
651200355231304
74633241002324
oct774162135370
9215054828104
1068212538104
1126a24221537
12112782a8534
1365810274a9
143431484984
151b93732604
hexfe1c8baf8

68212538104 has 16 divisors (see below), whose sum is σ = 128664370800. Its totient is φ = 33902039232.

The previous prime is 68212538089. The next prime is 68212538129. The reversal of 68212538104 is 40183521286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25527309 + ... + 25529980.

It is an arithmetic number, because the mean of its divisors is an integer number (8041523175).

Almost surely, 268212538104 is an apocalyptic number.

It is an amenable number.

68212538104 is a deficient number, since it is larger than the sum of its proper divisors (60451832696).

68212538104 is a wasteful number, since it uses less digits than its factorization.

68212538104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51057462 (or 51057458 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 68212538104 in words is "sixty-eight billion, two hundred twelve million, five hundred thirty-eight thousand, one hundred four".

Divisors: 1 2 4 8 167 334 668 1336 51057289 102114578 204229156 408458312 8526567263 17053134526 34106269052 68212538104