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520211011442 = 21937369993607
BaseRepresentation
bin1111001000111101111…
…11100001011101110010
31211201202101210110202212
413210132333201131302
532010343004331232
61034552011212122
752404212432063
oct7443677413562
91751671713685
10520211011442
11190690610541
12849a1747042
133a095466a45
141b26d55656a
15d7ea180eb2
hex791efe1772

520211011442 has 16 divisors (see below), whose sum is σ = 843585426240. Its totient is φ = 239755856688.

The previous prime is 520211011429. The next prime is 520211011493. The reversal of 520211011442 is 244110112025.

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, 184995398 + ... + 184998209.

It is an arithmetic number, because the mean of its divisors is an integer number (52724089140).

Almost surely, 2520211011442 is an apocalyptic number.

520211011442 is a deficient number, since it is larger than the sum of its proper divisors (323374414798).

520211011442 is a wasteful number, since it uses less digits than its factorization.

520211011442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369993665.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 520211011442 its reverse (244110112025), we get a palindrome (764321123467).

The spelling of 520211011442 in words is "five hundred twenty billion, two hundred eleven million, eleven thousand, four hundred forty-two".

Divisors: 1 2 19 37 38 74 703 1406 369993607 739987214 7029878533 13689763459 14059757066 27379526918 260105505721 520211011442