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68619416428 = 2254131709527
BaseRepresentation
bin111111111010000010…
…010011001101101100
320120010012112112020201
4333322002103031230
52111013032311203
651305012123244
74646311262443
oct777202231554
9216105475221
1068619416428
1127112965212
1211370606524
1366174067b4
14346d519d5a
151bb9303e1d
hexffa09336c

68619416428 has 12 divisors (see below), whose sum is σ = 120305949232. Its totient is φ = 34246288080.

The previous prime is 68619416419. The next prime is 68619416441. The reversal of 68619416428 is 82461491686.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15852600 + ... + 15856927.

Almost surely, 268619416428 is an apocalyptic number.

It is an amenable number.

68619416428 is a deficient number, since it is larger than the sum of its proper divisors (51686532804).

68619416428 is a wasteful number, since it uses less digits than its factorization.

68619416428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31710072 (or 31710070 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 55.

The spelling of 68619416428 in words is "sixty-eight billion, six hundred nineteen million, four hundred sixteen thousand, four hundred twenty-eight".

Divisors: 1 2 4 541 1082 2164 31709527 63419054 126838108 17154854107 34309708214 68619416428