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32812102081 = 112982918371
BaseRepresentation
bin11110100011110000…
…001111000111000001
310010200201202111020001
4132203300033013001
51014144344231311
623023525120001
72241054160123
oct364360170701
9103621674201
1032812102081
1112a08637a40
126438859001
13312bb6b925
141833add213
15cc09544c1
hex7a3c0f1c1

32812102081 has 4 divisors (see below), whose sum is σ = 35795020464. Its totient is φ = 29829183700.

The previous prime is 32812102049. The next prime is 32812102087. The reversal of 32812102081 is 18020121823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18020121823 = 111638192893.

It is a cyclic number.

It is not a de Polignac number, because 32812102081 - 25 = 32812102049 is a prime.

It is a super-2 number, since 2×328121020812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32812102087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491459175 + ... + 1491459196.

It is an arithmetic number, because the mean of its divisors is an integer number (8948755116).

Almost surely, 232812102081 is an apocalyptic number.

It is an amenable number.

32812102081 is a deficient number, since it is larger than the sum of its proper divisors (2982918383).

32812102081 is a wasteful number, since it uses less digits than its factorization.

32812102081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982918382.

The product of its (nonzero) digits is 1536, while the sum is 28.

The spelling of 32812102081 in words is "thirty-two billion, eight hundred twelve million, one hundred two thousand, eighty-one".

Divisors: 1 11 2982918371 32812102081