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47820513499 = 1131113978519
BaseRepresentation
bin101100100010010100…
…110010000011011011
311120102200201210012121
4230202110302003123
51240414022412444
633545103322111
73312015441463
oct544224620333
9146380653177
1047820513499
111930a484640
129326bb0337
134681371445
1424590b2ba3
15139d37b084
hexb225320db

47820513499 has 8 divisors (see below), whose sum is σ = 52335578880. Its totient is φ = 43333405800.

The previous prime is 47820513493. The next prime is 47820513557. The reversal of 47820513499 is 99431502874.

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 47820513499 - 211 = 47820511451 is a prime.

It is a super-2 number, since 2×478205134992 (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 (47820513493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6985839 + ... + 6992680.

It is an arithmetic number, because the mean of its divisors is an integer number (6541947360).

Almost surely, 247820513499 is an apocalyptic number.

47820513499 is a deficient number, since it is larger than the sum of its proper divisors (4515065381).

47820513499 is a wasteful number, since it uses less digits than its factorization.

47820513499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13978841.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 47820513499 in words is "forty-seven billion, eight hundred twenty million, five hundred thirteen thousand, four hundred ninety-nine".

Divisors: 1 11 311 3421 13978519 153763709 4347319409 47820513499