Search a number
-
+
61288712876 = 2217985598761
BaseRepresentation
bin111001000101000101…
…111000101010101100
312212012022112012110202
4321011011320222230
52001004402303001
644053341453032
74266535315046
oct710505705254
9185168465422
1061288712876
1123aa0976126
12ba65571178
135a197427a1
142d75ab6a96
1518da96396b
hexe45178aac

61288712876 has 12 divisors (see below), whose sum is σ = 107854440120. Its totient is φ = 30473158560.

The previous prime is 61288712869. The next prime is 61288712879. The reversal of 61288712876 is 67821788216.

It is not an unprimeable number, because it can be changed into a prime (61288712879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42798665 + ... + 42800096.

It is an arithmetic number, because the mean of its divisors is an integer number (8987870010).

Almost surely, 261288712876 is an apocalyptic number.

It is an amenable number.

61288712876 is a deficient number, since it is larger than the sum of its proper divisors (46565727244).

61288712876 is a wasteful number, since it uses less digits than its factorization.

61288712876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85598944 (or 85598942 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 56.

The spelling of 61288712876 in words is "sixty-one billion, two hundred eighty-eight million, seven hundred twelve thousand, eight hundred seventy-six".

Divisors: 1 2 4 179 358 716 85598761 171197522 342395044 15322178219 30644356438 61288712876