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68010020211 = 3743421178897
BaseRepresentation
bin111111010101101101…
…101000110101110011
320111112201211222210110
4333111231220311303
52103241031121321
651124322432403
74625231430210
oct772555506563
9214481758713
1068010020211
112692a979881
1211220502703
13654b09b113
143412608b07
151b80a7c176
hexfd5b68d73

68010020211 has 32 divisors (see below), whose sum is σ = 106296898048. Its totient is φ = 37868705280.

The previous prime is 68010020171. The next prime is 68010020233. The reversal of 68010020211 is 11202001086.

It is not a de Polignac number, because 68010020211 - 219 = 68009495923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68010020411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290715 + ... + 469611.

It is an arithmetic number, because the mean of its divisors is an integer number (3321778064).

Almost surely, 268010020211 is an apocalyptic number.

68010020211 is a deficient number, since it is larger than the sum of its proper divisors (38286877837).

68010020211 is a wasteful number, since it uses less digits than its factorization.

68010020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179371.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 68010020211 its reverse (11202001086), we get a palindrome (79212021297).

The spelling of 68010020211 in words is "sixty-eight billion, ten million, twenty thousand, two hundred eleven".

Divisors: 1 3 7 21 43 129 301 421 903 1263 2947 8841 18103 54309 126721 178897 380163 536691 1252279 3756837 7692571 23077713 53847997 75315637 161543991 225946911 527209459 1581628377 3238572391 9715717173 22670006737 68010020211