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80101111001 = 5314968314851
BaseRepresentation
bin100101010011001100…
…1011111010011011001
321122202101101001012212
41022212121133103121
52303021341023001
6100444204444505
75533660131602
oct1124631372331
9248671331185
1080101111001
1130a74a9729a
1213635849735
137727077202
143c3c378da9
15213c2e27bb
hex12a665f4d9

80101111001 has 16 divisors (see below), whose sum is σ = 82286020800. Its totient is φ = 77942779200.

The previous prime is 80101110941. The next prime is 80101111009. The reversal of 80101111001 is 10011110108.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80101111001 - 26 = 80101110937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80101111009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5386226 + ... + 5401076.

It is an arithmetic number, because the mean of its divisors is an integer number (5142876300).

Almost surely, 280101111001 is an apocalyptic number.

It is an amenable number.

80101111001 is a deficient number, since it is larger than the sum of its proper divisors (2184909799).

80101111001 is a wasteful number, since it uses less digits than its factorization.

80101111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15736.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 80101111001 its reverse (10011110108), we get a palindrome (90112221109).

The spelling of 80101111001 in words is "eighty billion, one hundred one million, one hundred eleven thousand, one".

Divisors: 1 53 149 683 7897 14851 36199 101767 787103 2212799 5393651 10143233 117278347 537591349 1511341717 80101111001