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80506816001 = 211381548891
BaseRepresentation
bin100101011111010010…
…1001000011000000001
321200210122202222211222
41022332211020120001
52304334221103001
6100552340244425
75550014434163
oct1127645103001
9250718688758
1080506816001
1131162aa9487
12137296a0715
137790135441
143c7a1c6933
152162c3161b
hex12be948601

80506816001 has 4 divisors (see below), whose sum is σ = 80888365104. Its totient is φ = 80125266900.

The previous prime is 80506815989. The next prime is 80506816021. The reversal of 80506816001 is 10061860508.

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 80506816001 - 214 = 80506799617 is a prime.

It is a super-3 number, since 3×805068160013 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80506816021) 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, 190774235 + ... + 190774656.

It is an arithmetic number, because the mean of its divisors is an integer number (20222091276).

Almost surely, 280506816001 is an apocalyptic number.

It is an amenable number.

80506816001 is a deficient number, since it is larger than the sum of its proper divisors (381549103).

80506816001 is a wasteful number, since it uses less digits than its factorization.

80506816001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381549102.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 80506816001 in words is "eighty billion, five hundred six million, eight hundred sixteen thousand, one".

Divisors: 1 211 381548891 80506816001