Search a number
-
+
55680000000 = 21335729
BaseRepresentation
bin110011110110110010…
…010110000000000000
312022201102202001211020
4303312302112000000
51403013040000000
641325023345440
74010542122342
oct636662260000
9168642661736
1055680000000
11216829aa129
12a95b152280
135334757581
1429a2c41292
1516ad36cba0
hexcf6c96000

55680000000 has 448 divisors, whose sum is σ = 191987789760. Its totient is φ = 14336000000.

The previous prime is 55679999993. The next prime is 55680000017. The reversal of 55680000000 is 8655.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1919999986 + ... + 1920000014.

Almost surely, 255680000000 is an apocalyptic number.

55680000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55680000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95993894880).

55680000000 is an abundant number, since it is smaller than the sum of its proper divisors (136307789760).

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

55680000000 is an frugal number, since it uses more digits than its factorization.

55680000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 55680000000 its reverse (8655), we get a palindrome (55680008655).

The spelling of 55680000000 in words is "fifty-five billion, six hundred eighty million", and thus it is an aban number.