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68673571837 = 137823675263
BaseRepresentation
bin111111111101010000…
…111000101111111101
320120020222102220111121
4333331100320233331
52111120413244322
651314224550541
74650536505103
oct777520705775
9216228386447
1068673571837
1127140493a52
1211386782451
1366256b8410
1434767b5c73
151bbde4eec7
hexffd438bfd

68673571837 has 8 divisors (see below), whose sum is σ = 73965717504. Its totient is φ = 63382792368.

The previous prime is 68673571817. The next prime is 68673571867. The reversal of 68673571837 is 73817537686.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68673571837 - 215 = 68673539069 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 (68673571817) 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, 235933 + ... + 439330.

It is an arithmetic number, because the mean of its divisors is an integer number (9245714688).

Almost surely, 268673571837 is an apocalyptic number.

It is an amenable number.

68673571837 is a deficient number, since it is larger than the sum of its proper divisors (5292145667).

68673571837 is a wasteful number, since it uses less digits than its factorization.

68673571837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683099.

The product of its digits is 35562240, while the sum is 61.

The spelling of 68673571837 in words is "sixty-eight billion, six hundred seventy-three million, five hundred seventy-one thousand, eight hundred thirty-seven".

Divisors: 1 13 7823 101699 675263 8778419 5282582449 68673571837