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68018774074 = 21371511164291
BaseRepresentation
bin111111010110001111…
…000010000000111010
320111120100022201211121
4333112033002000322
52103300301232244
651125234215454
74625366016526
oct772617020072
9214510281747
1068018774074
1126934908779
121122342458a
13654cb44714
143413846d86
151b8170ac84
hexfd63c203a

68018774074 has 16 divisors (see below), whose sum is σ = 102841534656. Its totient is φ = 33738594400.

The previous prime is 68018774071. The next prime is 68018774081. The reversal of 68018774074 is 47047781086.

68018774074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (68018774071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331869 + ... + 496159.

It is an arithmetic number, because the mean of its divisors is an integer number (6427595916).

Almost surely, 268018774074 is an apocalyptic number.

68018774074 is a deficient number, since it is larger than the sum of its proper divisors (34822760582).

68018774074 is a wasteful number, since it uses less digits than its factorization.

68018774074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165941.

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 68018774074 in words is "sixty-eight billion, eighteen million, seven hundred seventy-four thousand, seventy-four".

Divisors: 1 2 137 274 1511 3022 164291 207007 328582 414014 22507867 45015734 248243701 496487402 34009387037 68018774074