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80495468928 = 2733721727961
BaseRepresentation
bin100101011110111100…
…1110110000110000000
321200202212102111121000
41022331321312012000
52304323320001203
6100551253132000
75546516124300
oct1127571660600
9250685374530
1080495468928
1131157659236
121372592a000
13778a9916b4
143c788b1600
152161c3e4a3
hex12bde76180

80495468928 has 384 divisors, whose sum is σ = 292627922400. Its totient is φ = 21645066240.

The previous prime is 80495468923. The next prime is 80495468947. The reversal of 80495468928 is 82986459408.

80495468928 is a `hidden beast` number, since 8 + 0 + 4 + 9 + 546 + 89 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×804954689282 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80495468923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2864868 + ... + 2892828.

Almost surely, 280495468928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80495468928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146313961200).

80495468928 is an abundant number, since it is smaller than the sum of its proper divisors (212132453472).

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

80495468928 is a wasteful number, since it uses less digits than its factorization.

80495468928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28015 (or 27990 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 63.

The spelling of 80495468928 in words is "eighty billion, four hundred ninety-five million, four hundred sixty-eight thousand, nine hundred twenty-eight".