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61168631711 = 11192377123127
BaseRepresentation
bin111000111101111011…
…110011111110011111
312211212221120110002012
4320331323303332133
52000233132203321
644033412021435
74263546535145
oct707573637637
9184787513065
1061168631711
1123a3a1093a0
12ba3130187b
1359ca8ba945
142d63b79595
1518d014405b
hexe3def3f9f

61168631711 has 16 divisors (see below), whose sum is σ = 70271612160. Its totient is φ = 52658527680.

The previous prime is 61168631701. The next prime is 61168631723. The reversal of 61168631711 is 11713686116.

It is not a de Polignac number, because 61168631711 - 26 = 61168631647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61168631701) 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, 435230 + ... + 558356.

It is an arithmetic number, because the mean of its divisors is an integer number (4391975760).

Almost surely, 261168631711 is an apocalyptic number.

61168631711 is a deficient number, since it is larger than the sum of its proper divisors (9102980449).

61168631711 is a wasteful number, since it uses less digits than its factorization.

61168631711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125534.

The product of its digits is 36288, while the sum is 41.

The spelling of 61168631711 in words is "sixty-one billion, one hundred sixty-eight million, six hundred thirty-one thousand, seven hundred eleven".

Divisors: 1 11 19 209 2377 26147 45163 123127 496793 1354397 2339413 25733543 292672879 3219401669 5560784701 61168631711