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78878695260 = 22351314644921
BaseRepresentation
bin100100101110110001…
…0010101111101011100
321112121012011220001210
41021131202111331130
52243020421222020
6100123020104420
75461454563401
oct1113542257534
9245535156053
1078878695260
11304a7a70252
1213354395110
137590a34ba1
143b63c922a8
1520b9d2a3e0
hex125d895f5c

78878695260 has 24 divisors (see below), whose sum is σ = 220860346896. Its totient is φ = 21034318720.

The previous prime is 78878695249. The next prime is 78878695307. The reversal of 78878695260 is 6259687887.

It is a junction number, because it is equal to n+sod(n) for n = 78878695191 and 78878695200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657322401 + ... + 657322520.

It is an arithmetic number, because the mean of its divisors is an integer number (9202514454).

Almost surely, 278878695260 is an apocalyptic number.

It is an amenable number.

78878695260 is an abundant number, since it is smaller than the sum of its proper divisors (141981651636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78878695260 is a wasteful number, since it uses less digits than its factorization.

78878695260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314644933 (or 1314644931 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 66.

The spelling of 78878695260 in words is "seventy-eight billion, eight hundred seventy-eight million, six hundred ninety-five thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1314644921 2629289842 3943934763 5258579684 6573224605 7887869526 13146449210 15775739052 19719673815 26292898420 39439347630 78878695260