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80911208448 = 212367379
BaseRepresentation
bin100101101011010101…
…1110001000000000000
321201211211201021000000
41023112223301000000
52311201232132243
6101100424000000
75563024632000
oct1132653610000
9251754637000
1080911208448
11313502a4514
1213821000000
137825b54105
143cb7bb2000
1521884b15d3
hex12d6af1000

80911208448 has 728 divisors, whose sum is σ = 286488416000. Its totient is φ = 22824861696.

The previous prime is 80911208437. The next prime is 80911208509. The reversal of 80911208448 is 84480211908.

80911208448 is a `hidden beast` number, since 80 + 9 + 1 + 120 + 8 + 448 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1024192473 + ... + 1024192551.

Almost surely, 280911208448 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 80911208448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143244208000).

80911208448 is an abundant number, since it is smaller than the sum of its proper divisors (205577207552).

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

80911208448 is an frugal number, since it uses more digits than its factorization.

80911208448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 80911208448 in words is "eighty billion, nine hundred eleven million, two hundred eight thousand, four hundred forty-eight".