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61286883430 = 2517360511079
BaseRepresentation
bin111001000100111110…
…111010000001100110
312212012012002020221111
4321010332322001212
52001003420232210
644053234335234
74266513625303
oct710476720146
9185165066844
1061286883430
1123a9a936693
12ba64a2a51a
135a19251b86
142d7575c0aa
1518da70188a
hexe44fba066

61286883430 has 16 divisors (see below), whose sum is σ = 116805589920. Its totient is φ = 23072708992.

The previous prime is 61286883397. The next prime is 61286883451. The reversal of 61286883430 is 3438868216.

61286883430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 180255370 + ... + 180255709.

It is an arithmetic number, because the mean of its divisors is an integer number (7300349370).

Almost surely, 261286883430 is an apocalyptic number.

61286883430 is a deficient number, since it is larger than the sum of its proper divisors (55518706490).

61286883430 is a wasteful number, since it uses less digits than its factorization.

61286883430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360511103.

The product of its (nonzero) digits is 1327104, while the sum is 49.

The spelling of 61286883430 in words is "sixty-one billion, two hundred eighty-six million, eight hundred eighty-three thousand, four hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 360511079 721022158 1802555395 3605110790 6128688343 12257376686 30643441715 61286883430