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27680422999 = 149185774651
BaseRepresentation
bin11001110001111000…
…011011110001010111
32122110002121011220211
4121301320123301113
5423142142013444
620414411310251
71666642466455
oct316170336127
978402534824
1027680422999
1110814971549
12544614b387
1327c1957228
1414a83619d5
15ac018bc34
hex671e1bc57

27680422999 has 4 divisors (see below), whose sum is σ = 27866197800. Its totient is φ = 27494648200.

The previous prime is 27680422967. The next prime is 27680423003. The reversal of 27680422999 is 99922408672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27680422999 - 25 = 27680422967 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27680422199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92887177 + ... + 92887474.

It is an arithmetic number, because the mean of its divisors is an integer number (6966549450).

Almost surely, 227680422999 is an apocalyptic number.

27680422999 is a deficient number, since it is larger than the sum of its proper divisors (185774801).

27680422999 is a wasteful number, since it uses less digits than its factorization.

27680422999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185774800.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 27680422999 in words is "twenty-seven billion, six hundred eighty million, four hundred twenty-two thousand, nine hundred ninety-nine".

Divisors: 1 149 185774651 27680422999