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26421567143 = 197930795717
BaseRepresentation
bin11000100110110110…
…010001111010100111
32112012100211200022212
4120212312101322213
5413102410122033
620045441514035
71623515420666
oct304666217247
975170750285
1026421567143
1110229316504
12515464291b
132650bc67ca
1413c90b0ddd
15a498c7748
hex626d91ea7

26421567143 has 16 divisors (see below), whose sum is σ = 28178304000. Its totient is φ = 24701762592.

The previous prime is 26421567119. The next prime is 26421567169. The reversal of 26421567143 is 34176512462.

It is not a de Polignac number, because 26421567143 - 26 = 26421567079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26421567143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26421567103) 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 15 ways as a sum of consecutive naturals, for example, 4618721 + ... + 4624437.

It is an arithmetic number, because the mean of its divisors is an integer number (1761144000).

Almost surely, 226421567143 is an apocalyptic number.

26421567143 is a deficient number, since it is larger than the sum of its proper divisors (1756736857).

26421567143 is a wasteful number, since it uses less digits than its factorization.

26421567143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8894.

The product of its digits is 241920, while the sum is 41.

The spelling of 26421567143 in words is "twenty-six billion, four hundred twenty-one million, five hundred sixty-seven thousand, one hundred forty-three".

Divisors: 1 19 79 1501 3079 5717 58501 108623 243241 451643 4621579 8581217 17602643 334450217 1390608797 26421567143