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517930180420 = 225191362974159
BaseRepresentation
bin1111000100101110000…
…10110101111101000100
31211111212110000020210211
413202113002311331010
531441210111233140
61033533413125204
752263535616002
oct7422702657504
91744773006724
10517930180420
1118a7200a2424
1284465929804
1339ac0a739a3
141b0d4677a72
15d714ce92ea
hex78970b5f44

517930180420 has 24 divisors (see below), whose sum is σ = 1144898294400. Its totient is φ = 196268278752.

The previous prime is 517930180403. The next prime is 517930180447. The reversal of 517930180420 is 24081039715.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681486700 + ... + 681487459.

It is an arithmetic number, because the mean of its divisors is an integer number (47704095600).

Almost surely, 2517930180420 is an apocalyptic number.

It is an amenable number.

517930180420 is an abundant number, since it is smaller than the sum of its proper divisors (626968113980).

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

517930180420 is a wasteful number, since it uses less digits than its factorization.

517930180420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362974187 (or 1362974185 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 517930180420 in words is "five hundred seventeen billion, nine hundred thirty million, one hundred eighty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 1362974159 2725948318 5451896636 6814870795 13629741590 25896509021 27259483180 51793018042 103586036084 129482545105 258965090210 517930180420