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80016408533 = 198740269959
BaseRepresentation
bin100101010000101011…
…0010111111111010101
321122112110222201021102
41022201112113333111
52302333200033113
6100431541155445
75531611151615
oct1124126277725
9248473881242
1080016408533
1130a311a4056
12136113bbb85
13771265b5c9
143c3100aa45
152134b60758
hex12a1597fd5

80016408533 has 4 divisors (see below), whose sum is σ = 80056680480. Its totient is φ = 79976136588.

The previous prime is 80016408497. The next prime is 80016408551. The reversal of 80016408533 is 33580461008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80016408533 - 210 = 80016407509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80016408553) 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, 20132993 + ... + 20136966.

It is an arithmetic number, because the mean of its divisors is an integer number (20014170120).

Almost surely, 280016408533 is an apocalyptic number.

It is an amenable number.

80016408533 is a deficient number, since it is larger than the sum of its proper divisors (40271947).

80016408533 is a wasteful number, since it uses less digits than its factorization.

80016408533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40271946.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 80016408533 in words is "eighty billion, sixteen million, four hundred eight thousand, five hundred thirty-three".

Divisors: 1 1987 40269959 80016408533