Search a number
-
+
68487280476160 = 21457139187103
BaseRepresentation
bin11111001001001111100000…
…00001100100000000000000
322222111022122022221212120111
433210213300001210000000
532434043422300214120
6401354342230121104
720266020440602420
oct1744476001440000
9288438568855514
1068487280476160
111a905324407267
1278213637b0194
132c2a427371a40
1412cab32c00480
157db7a0b4d75a
hex3e49f0064000

68487280476160 has 240 divisors, whose sum is σ = 202294738308096. Its totient is φ = 21675093000192.

The previous prime is 68487280476151. The next prime is 68487280476179. The reversal of 68487280476160 is 6167408278486.

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, 2861169 + ... + 12048271.

Almost surely, 268487280476160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68487280476160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101147369154048).

68487280476160 is an abundant number, since it is smaller than the sum of its proper divisors (133807457831936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68487280476160 is an equidigital number, since it uses as much as digits as its factorization.

68487280476160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187156 (or 9187130 counting only the distinct ones).

The product of its (nonzero) digits is 173408256, while the sum is 67.

The spelling of 68487280476160 in words is "sixty-eight trillion, four hundred eighty-seven billion, two hundred eighty million, four hundred seventy-six thousand, one hundred sixty".