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66141869260 = 225109172317609
BaseRepresentation
bin111101100110010111…
…001101010011001100
320022201112121002110111
4331212113031103030
52040424304304020
650215105445404
74531025420035
oct754627152314
9208645532414
1066141869260
11260613a7375
121099a940864
13631103905c
1432b6471a8c
151ac1a60d5a
hexf665cd4cc

66141869260 has 48 divisors (see below), whose sum is σ = 140261536800. Its totient is φ = 26197323264.

The previous prime is 66141869251. The next prime is 66141869303. The reversal of 66141869260 is 6296814166.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3747336 + ... + 3764944.

It is an arithmetic number, because the mean of its divisors is an integer number (2922115350).

Almost surely, 266141869260 is an apocalyptic number.

It is an amenable number.

66141869260 is an abundant number, since it is smaller than the sum of its proper divisors (74119667540).

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

66141869260 is a wasteful number, since it uses less digits than its factorization.

66141869260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19450 (or 19448 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 66141869260 in words is "sixty-six billion, one hundred forty-one million, eight hundred sixty-nine thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 1723 2180 3446 6892 8615 17230 17609 34460 35218 70436 88045 176090 187807 352180 375614 751228 939035 1878070 1919381 3756140 3838762 7677524 9596905 19193810 30340307 38387620 60680614 121361228 151701535 303403070 606806140 3307093463 6614186926 13228373852 16535467315 33070934630 66141869260