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68947511260 = 2253447375563
BaseRepresentation
bin100000000110110010…
…1111000011111011100
320120222001220110202011
41000031211320133130
52112201030330020
651401332241004
74660404114235
oct1001545703734
9216861813664
1068947511260
1127271088771
1211442470164
13666a390354
1434a0d2408c
151bd801235a
hex100d9787dc

68947511260 has 12 divisors (see below), whose sum is σ = 144789773688. Its totient is φ = 27579004496.

The previous prime is 68947511257. The next prime is 68947511293. The reversal of 68947511260 is 6211574986.

It is a happy number.

It is a congruent number.

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, 1723687762 + ... + 1723687801.

It is an arithmetic number, because the mean of its divisors is an integer number (12065814474).

Almost surely, 268947511260 is an apocalyptic number.

It is an amenable number.

68947511260 is an abundant number, since it is smaller than the sum of its proper divisors (75842262428).

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

68947511260 is a wasteful number, since it uses less digits than its factorization.

68947511260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447375572 (or 3447375570 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 68947511260 in words is "sixty-eight billion, nine hundred forty-seven million, five hundred eleven thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 3447375563 6894751126 13789502252 17236877815 34473755630 68947511260