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51100510555601 = 138389941949747
BaseRepresentation
bin10111001111001110000111…
…10001111000110111010001
320200221011100102220221111022
423213213003301320313101
523144212321200234401
6300403130033525225
713522614200665013
oct1347470361706721
9220834312827438
1051100510555601
1115311672026061
125893755713815
1322689b020aa50
14c893c68141b3
155d939536171b
hex2e79c3c78dd1

51100510555601 has 16 divisors (see below), whose sum is σ = 55044828753600. Its totient is φ = 47158123935168.

The previous prime is 51100510555553. The next prime is 51100510555637. The reversal of 51100510555601 is 10655501500115.

It is a cyclic number.

It is not a de Polignac number, because 51100510555601 - 214 = 51100510539217 is a prime.

It is a super-2 number, since 2×511005105556012 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51100510555681) 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, 1027183010 + ... + 1027232756.

It is an arithmetic number, because the mean of its divisors is an integer number (3440301797100).

Almost surely, 251100510555601 is an apocalyptic number.

It is an amenable number.

51100510555601 is a deficient number, since it is larger than the sum of its proper divisors (3944318197999).

51100510555601 is a wasteful number, since it uses less digits than its factorization.

51100510555601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67568.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 51100510555601 in words is "fifty-one trillion, one hundred billion, five hundred ten million, five hundred fifty-five thousand, six hundred one".

Divisors: 1 13 8389 9419 49747 109057 122447 646711 79015991 417327583 468566993 1027207883 5425258579 6091370909 3930808504277 51100510555601