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68983587735 = 355581824029
BaseRepresentation
bin100000000111110111…
…1100000001110010111
320121001120210100100220
41000033233200032113
52112234244301420
651405101405423
74661322551406
oct1001757401627
9217046710326
1068983587735
112728a489537
1211452569873
1366749b208a
1434a5a3563d
151bdb28b840
hex100fbe0397

68983587735 has 16 divisors (see below), whose sum is σ = 110393651040. Its totient is φ = 36784609920.

The previous prime is 68983587733. The next prime is 68983587749. The reversal of 68983587735 is 53778538986.

It is not a de Polignac number, because 68983587735 - 21 = 68983587733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68983587735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68983587733) 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, 328300 + ... + 495729.

It is an arithmetic number, because the mean of its divisors is an integer number (6899603190).

Almost surely, 268983587735 is an apocalyptic number.

68983587735 is a deficient number, since it is larger than the sum of its proper divisors (41410063305).

68983587735 is a wasteful number, since it uses less digits than its factorization.

68983587735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829618.

The product of its digits is 304819200, while the sum is 69.

The spelling of 68983587735 in words is "sixty-eight billion, nine hundred eighty-three million, five hundred eighty-seven thousand, seven hundred thirty-five".

Divisors: 1 3 5 15 5581 16743 27905 83715 824029 2472087 4120145 12360435 4598905849 13796717547 22994529245 68983587735