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80021212008 = 23335954716979
BaseRepresentation
bin100101010000110100…
…0101100101101101000
321122112211000202101220
41022201220230231220
52302340412241013
6100432232142040
75532000036123
oct1124150545550
9248484022356
1080021212008
1130a33984a71
1213612b37920
137713650aba
143c318db3ba
1521352adb23
hex12a1a2cb68

80021212008 has 64 divisors (see below), whose sum is σ = 200988864000. Its totient is φ = 26549245632.

The previous prime is 80021211997. The next prime is 80021212069.

80021212008 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4704463 + ... + 4721441.

It is an arithmetic number, because the mean of its divisors is an integer number (3140451000).

Almost surely, 280021212008 is an apocalyptic number.

It is an amenable number.

80021212008 is an abundant number, since it is smaller than the sum of its proper divisors (120967651992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80021212008 is a wasteful number, since it uses less digits than its factorization.

80021212008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17894 (or 17890 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 80021212008 in words is "eighty billion, twenty-one million, two hundred twelve thousand, eight".

Divisors: 1 2 3 4 6 8 12 24 359 547 718 1077 1094 1436 1641 2154 2188 2872 3282 4308 4376 6564 8616 13128 16979 33958 50937 67916 101874 135832 196373 203748 392746 407496 589119 785492 1178238 1570984 2356476 4712952 6095461 9287513 12190922 18286383 18575026 24381844 27862539 36572766 37150052 48763688 55725078 73145532 74300104 111450156 146291064 222900312 3334217167 6668434334 10002651501 13336868668 20005303002 26673737336 40010606004 80021212008