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68097130785 = 3351926548589
BaseRepresentation
bin111111011010111001…
…111100000100100001
320111202210202200001000
4333122321330010201
52103430331141120
651141113502213
74630340026665
oct773271740441
9214683680030
1068097130785
1126975067292
1211245711969
13656314ab38
1434200028a5
151b88537990
hexfdae7c121

68097130785 has 32 divisors (see below), whose sum is σ = 127433232000. Its totient is φ = 34406970048.

The previous prime is 68097130769. The next prime is 68097130793. The reversal of 68097130785 is 58703179086.

It is not a de Polignac number, because 68097130785 - 24 = 68097130769 is a prime.

It is a super-2 number, since 2×680971307852 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13271730 + ... + 13276859.

It is an arithmetic number, because the mean of its divisors is an integer number (3982288500).

Almost surely, 268097130785 is an apocalyptic number.

It is an amenable number.

68097130785 is a deficient number, since it is larger than the sum of its proper divisors (59336101215).

68097130785 is a wasteful number, since it uses less digits than its factorization.

68097130785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26548622 (or 26548616 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 68097130785 in words is "sixty-eight billion, ninety-seven million, one hundred thirty thousand, seven hundred eighty-five".

Divisors: 1 3 5 9 15 19 27 45 57 95 135 171 285 513 855 2565 26548589 79645767 132742945 238937301 398228835 504423191 716811903 1194686505 1513269573 2522115955 3584059515 4539808719 7566347865 13619426157 22699043595 68097130785