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20826725005 = 571509115259
BaseRepresentation
bin10011011001010111…
…101001101010001101
31222202110011020202101
4103121113221222031
5320123120200010
613322340555101
71335051145612
oct233127515215
958673136671
1020826725005
118918163829
1240529b2a91
131c6ba56c28
14101800a509
1581d62173a
hex4d95e9a8d

20826725005 has 16 divisors (see below), whose sum is σ = 25394083200. Its totient is φ = 16394297920.

The previous prime is 20826724991. The next prime is 20826725011. The reversal of 20826725005 is 50052762802.

It is not a de Polignac number, because 20826725005 - 211 = 20826722957 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 123066 + ... + 238324.

It is an arithmetic number, because the mean of its divisors is an integer number (1587130200).

Almost surely, 220826725005 is an apocalyptic number.

It is an amenable number.

20826725005 is a deficient number, since it is larger than the sum of its proper divisors (4567358195).

20826725005 is a wasteful number, since it uses less digits than its factorization.

20826725005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115844.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 20826725005 in words is "twenty billion, eight hundred twenty-six million, seven hundred twenty-five thousand, five".

Divisors: 1 5 71 355 509 2545 36139 115259 180695 576295 8183389 40916945 58666831 293334155 4165345001 20826725005