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80047581880 = 23572472773137
BaseRepresentation
bin100101010001100110…
…1010010101010111000
321122121122122111001211
41022203031102222320
52302414140110010
6100435013252504
75532440135200
oct1124315225270
9248548574054
1080047581880
1130a47856052
121361b934134
137718c54686
143c35203400
15213776c08a
hex12a3352ab8

80047581880 has 192 divisors, whose sum is σ = 214810911360. Its totient is φ = 26755448832.

The previous prime is 80047581877. The next prime is 80047581907. The reversal of 80047581880 is 8818574008.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25515672 + ... + 25518808.

It is an arithmetic number, because the mean of its divisors is an integer number (1118806830).

Almost surely, 280047581880 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 80047581880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107405455680).

80047581880 is an abundant number, since it is smaller than the sum of its proper divisors (134763329480).

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

80047581880 is a wasteful number, since it uses less digits than its factorization.

80047581880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486 (or 3475 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 49.

The spelling of 80047581880 in words is "eighty billion, forty-seven million, five hundred eighty-one thousand, eight hundred eighty".