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68034498965 = 513606899793
BaseRepresentation
bin111111010111001011…
…000001000110010101
320111121102220122022222
4333113023001012111
52103313312431330
651130555232125
74625646461636
oct772713010625
9214542818288
1068034498965
1126942779054
1211228748645
13655318bca4
14341597b88d
151b82cb50e5
hexfd72c1195

68034498965 has 4 divisors (see below), whose sum is σ = 81641398764. Its totient is φ = 54427599168.

The previous prime is 68034498947. The next prime is 68034498977. The reversal of 68034498965 is 56989443086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9196234609 + 58838264356 = 95897^2 + 242566^2 .

It is a cyclic number.

It is not a de Polignac number, because 68034498965 - 228 = 67766063509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68034498898 and 68034498907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6803449892 + ... + 6803449901.

It is an arithmetic number, because the mean of its divisors is an integer number (20410349691).

Almost surely, 268034498965 is an apocalyptic number.

It is an amenable number.

68034498965 is a deficient number, since it is larger than the sum of its proper divisors (13606899799).

68034498965 is a wasteful number, since it uses less digits than its factorization.

68034498965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13606899798.

The product of its (nonzero) digits is 44789760, while the sum is 62.

The spelling of 68034498965 in words is "sixty-eight billion, thirty-four million, four hundred ninety-eight thousand, nine hundred sixty-five".

Divisors: 1 5 13606899793 68034498965