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80996004960 = 253513176112517
BaseRepresentation
bin100101101101110111…
…1001111010001100000
321202001202021100221120
41023123233033101200
52311334434124320
6101113053252240
75565104453103
oct1133357172140
9252052240846
1080996004960
1131394151382
1213845494080
13783a5a3770
143cc516673a
152190b61440
hex12dbbcf460

80996004960 has 384 divisors, whose sum is σ = 295718822784. Its totient is φ = 18455592960.

The previous prime is 80996004949. The next prime is 80996004983. The reversal of 80996004960 is 6940069908.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6464622 + ... + 6477138.

It is an arithmetic number, because the mean of its divisors is an integer number (770101101).

Almost surely, 280996004960 is an apocalyptic number.

80996004960 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80996004960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147859411392).

80996004960 is an abundant number, since it is smaller than the sum of its proper divisors (214722817824).

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

80996004960 is a wasteful number, since it uses less digits than its factorization.

80996004960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12626 (or 12618 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 80996004960 in words is "eighty billion, nine hundred ninety-six million, four thousand, nine hundred sixty".