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51879882813 = 31113911310199
BaseRepresentation
bin110000010100010010…
…000011000000111101
311221220121011010001020
4300110102003000331
51322222222222223
635455553534353
73514426504443
oct602422030075
9157817133036
1051879882813
1120002928910
12a07a5743b9
134b7a37ba15
14272227cb93
15153992c1e3
hexc1448303d

51879882813 has 16 divisors (see below), whose sum is σ = 76004544000. Its totient is φ = 31216146480.

The previous prime is 51879882811. The next prime is 51879882851. The reversal of 51879882813 is 31828897815.

It is not a de Polignac number, because 51879882813 - 21 = 51879882811 is a prime.

It is a super-2 number, since 2×518798828132 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51879882811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5650513 + ... + 5659686.

It is an arithmetic number, because the mean of its divisors is an integer number (4750284000).

Almost surely, 251879882813 is an apocalyptic number.

It is an amenable number.

51879882813 is a deficient number, since it is larger than the sum of its proper divisors (24124661187).

51879882813 is a wasteful number, since it uses less digits than its factorization.

51879882813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11310352.

The product of its digits is 7741440, while the sum is 60.

The spelling of 51879882813 in words is "fifty-one billion, eight hundred seventy-nine million, eight hundred eighty-two thousand, eight hundred thirteen".

Divisors: 1 3 11 33 139 417 1529 4587 11310199 33930597 124412189 373236567 1572117661 4716352983 17293294271 51879882813