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80372423519 = 734995633919
BaseRepresentation
bin100101011011010010…
…0011101101101011111
321200110021220011000122
41022312210131231133
52304100320023034
6100531135545155
75543463220313
oct1126644355537
9250407804018
1080372423519
11310a4157413
12136b068b1bb
13776b33c56b
143c66401b43
15215603662e
hex12b691db5f

80372423519 has 16 divisors (see below), whose sum is σ = 81802560000. Its totient is φ = 78951900096.

The previous prime is 80372423501. The next prime is 80372423543. The reversal of 80372423519 is 91532427308.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80372423519 - 220 = 80371374943 is a prime.

It is a super-2 number, since 2×803724235192 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80372423519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80372423569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20506442 + ... + 20510360.

It is an arithmetic number, because the mean of its divisors is an integer number (5112660000).

Almost surely, 280372423519 is an apocalyptic number.

80372423519 is a deficient number, since it is larger than the sum of its proper divisors (1430136481).

80372423519 is a wasteful number, since it uses less digits than its factorization.

80372423519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5054.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 80372423519 in words is "eighty billion, three hundred seventy-two million, four hundred twenty-three thousand, five hundred nineteen".

Divisors: 1 73 499 563 3919 36427 41099 280937 286087 1955581 2206397 20508401 142757413 161066981 1100992103 80372423519