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51442624415 = 57135310121121
BaseRepresentation
bin101111111010001110…
…000010011110011111
311220210010101002021202
4233322032002132133
51320323302440130
635344333550115
73500540043560
oct577216023637
9156703332252
1051442624415
111a8a9025136
129b7804533b
134b0a8c3740
1426c017a167
151511359145
hexbfa38279f

51442624415 has 64 divisors (see below), whose sum is σ = 78180463872. Its totient is φ = 31629312000.

The previous prime is 51442624391. The next prime is 51442624423.

51442624415 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51442624415 - 222 = 51438430111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2425055 + ... + 2446175.

It is an arithmetic number, because the mean of its divisors is an integer number (1221569748).

Almost surely, 251442624415 is an apocalyptic number.

51442624415 is a deficient number, since it is larger than the sum of its proper divisors (26737839457).

51442624415 is a wasteful number, since it uses less digits than its factorization.

51442624415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21300.

The product of its digits is 153600, while the sum is 38.

The spelling of 51442624415 in words is "fifty-one billion, four hundred forty-two million, six hundred twenty-four thousand, four hundred fifteen".

Divisors: 1 5 7 13 35 53 65 91 101 265 371 455 505 689 707 1313 1855 3445 3535 4823 5353 6565 9191 21121 24115 26765 37471 45955 69589 105605 147847 187355 274573 347945 487123 739235 1119413 1372865 1922011 2133221 2435615 5597065 7835891 9610055 10666105 14552369 14932547 27731873 39179455 72761845 74662735 101866583 113060713 138659365 194123111 509332915 565303565 791424991 970615555 1469789269 3957124955 7348946345 10288524883 51442624415