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68406179127 = 31113295498447
BaseRepresentation
bin111111101101010100…
…110111010100110111
320112120100021221122220
4333231110313110313
52110043440213002
651231513453423
74641111633366
oct775524672467
9215510257586
1068406179127
1127013560940
1211311111273
1365b2196290
14344d08d7dd
151ba57327bc
hexfed537537

68406179127 has 32 divisors (see below), whose sum is σ = 110848711680. Its totient is φ = 36949557120.

The previous prime is 68406179117. The next prime is 68406179129. The reversal of 68406179127 is 72197160486.

It is not a de Polignac number, because 68406179127 - 212 = 68406175031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68406179127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68406179129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2736783 + ... + 2761664.

It is an arithmetic number, because the mean of its divisors is an integer number (3464022240).

Almost surely, 268406179127 is an apocalyptic number.

68406179127 is a deficient number, since it is larger than the sum of its proper divisors (42442532553).

68406179127 is a wasteful number, since it uses less digits than its factorization.

68406179127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498503.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 68406179127 in words is "sixty-eight billion, four hundred six million, one hundred seventy-nine thousand, one hundred twenty-seven".

Divisors: 1 3 11 13 29 33 39 87 143 319 377 429 957 1131 4147 12441 5498447 16495341 60482917 71479811 159454963 181448751 214439433 478364889 786277921 1754004593 2072914519 2358833763 5262013779 6218743557 22802059709 68406179127