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83135653261 = 1271673919829
BaseRepresentation
bin100110101101101000…
…1010110010110001101
321221120212101202121221
41031123101112112031
52330230211401021
6102105245323341
76002115251563
oct1153321262615
9257525352557
1083135653261
11322919aa861
1214141b66551
137abb96404b
1440493b3a33
15226890b241
hex135b45658d

83135653261 has 8 divisors (see below), whose sum is σ = 84292024320. Its totient is φ = 81987122448.

The previous prime is 83135653247. The next prime is 83135653267. The reversal of 83135653261 is 16235653138.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83135653261 - 217 = 83135522189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83135653267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1938706 + ... + 1981123.

It is an arithmetic number, because the mean of its divisors is an integer number (10536503040).

Almost surely, 283135653261 is an apocalyptic number.

It is an amenable number.

83135653261 is a deficient number, since it is larger than the sum of its proper divisors (1156371059).

83135653261 is a wasteful number, since it uses less digits than its factorization.

83135653261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920123.

The product of its digits is 388800, while the sum is 43.

The spelling of 83135653261 in words is "eighty-three billion, one hundred thirty-five million, six hundred fifty-three thousand, two hundred sixty-one".

Divisors: 1 127 167 21209 3919829 497818283 654611443 83135653261