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68272630492 = 22111551650693
BaseRepresentation
bin111111100101010111…
…011010101011011100
320112020000222222101011
4333211113122223130
52104310243133432
651210343225004
74634600532643
oct774527325334
9215200888334
1068272630492
1126a55135870
1211294448164
136590607511
14343944835a
151b98b52847
hexfe55daadc

68272630492 has 12 divisors (see below), whose sum is σ = 130338658296. Its totient is φ = 31033013840.

The previous prime is 68272630487. The next prime is 68272630537. The reversal of 68272630492 is 29403627286.

It is a super-2 number, since 2×682726304922 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775825303 + ... + 775825390.

It is an arithmetic number, because the mean of its divisors is an integer number (10861554858).

Almost surely, 268272630492 is an apocalyptic number.

It is an amenable number.

68272630492 is a deficient number, since it is larger than the sum of its proper divisors (62066027804).

68272630492 is a wasteful number, since it uses less digits than its factorization.

68272630492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551650708 (or 1551650706 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 68272630492 in words is "sixty-eight billion, two hundred seventy-two million, six hundred thirty thousand, four hundred ninety-two".

Divisors: 1 2 4 11 22 44 1551650693 3103301386 6206602772 17068157623 34136315246 68272630492