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51342442255 = 5134318369389
BaseRepresentation
bin101111110100001111…
…110111111100001111
311220112010212022012101
4233310033313330033
51320122131123010
635330354415531
73465212362366
oct576417677417
9156463768171
1051342442255
111a857519865
129b4a5915a7
134ac2c18060
1426b0b3c7dd
15150766a73a
hexbf43f7f0f

51342442255 has 16 divisors (see below), whose sum is σ = 67893265440. Its totient is φ = 37032686208.

The previous prime is 51342442243. The next prime is 51342442297. The reversal of 51342442255 is 55224424315.

It is a cyclic number.

It is not a de Polignac number, because 51342442255 - 215 = 51342409487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9181900 + ... + 9187489.

It is an arithmetic number, because the mean of its divisors is an integer number (4243329090).

Almost surely, 251342442255 is an apocalyptic number.

51342442255 is a deficient number, since it is larger than the sum of its proper divisors (16550823185).

51342442255 is a wasteful number, since it uses less digits than its factorization.

51342442255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18369450.

The product of its digits is 192000, while the sum is 37.

The spelling of 51342442255 in words is "fifty-one billion, three hundred forty-two million, four hundred forty-two thousand, two hundred fifty-five".

Divisors: 1 5 13 43 65 215 559 2795 18369389 91846945 238802057 789883727 1194010285 3949418635 10268488451 51342442255