Search a number
-
+
68805088060 = 22510931561967
BaseRepresentation
bin100000000010100011…
…0100101001100111100
320120121010220121211211
41000011012211030330
52111403100304220
651335243454204
74654024412242
oct1000506451474
9216533817754
1068805088060
11271a8751045
1211402827364
136646a15077
14348a04c792
151bca77cb5a
hex10051a533c

68805088060 has 24 divisors (see below), whose sum is σ = 145816292160. Its totient is φ = 27269538624.

The previous prime is 68805088019. The next prime is 68805088073. The reversal of 68805088060 is 6088050886.

It is a junction number, because it is equal to n+sod(n) for n = 68805087995 and 68805088013.

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, 15778804 + ... + 15783163.

It is an arithmetic number, because the mean of its divisors is an integer number (6075678840).

Almost surely, 268805088060 is an apocalyptic number.

It is an amenable number.

68805088060 is an abundant number, since it is smaller than the sum of its proper divisors (77011204100).

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

68805088060 is a wasteful number, since it uses less digits than its factorization.

68805088060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31562085 (or 31562083 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 49.

The spelling of 68805088060 in words is "sixty-eight billion, eight hundred five million, eighty-eight thousand, sixty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 31561967 63123934 126247868 157809835 315619670 631239340 3440254403 6880508806 13761017612 17201272015 34402544030 68805088060