Search a number
-
+
68793038819 = 478317634719
BaseRepresentation
bin100000000010001100…
…0100111011111100011
320120120022020110101122
41000010120213133203
52111342004220234
651334133322455
74653520116251
oct1000430473743
9216508213348
1068793038819
11271a197129a
12113ba79642b
13664438683b
1434885d35d1
151bc969c92e
hex10046277e3

68793038819 has 8 divisors (see below), whose sum is σ = 71103191040. Its totient is φ = 66518156296.

The previous prime is 68793038767. The next prime is 68793038827. The reversal of 68793038819 is 91883039786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68793038819 is a prime.

It is a super-2 number, since 2×687930388192 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68793038849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8813459 + ... + 8821260.

It is an arithmetic number, because the mean of its divisors is an integer number (8887898880).

Almost surely, 268793038819 is an apocalyptic number.

68793038819 is a deficient number, since it is larger than the sum of its proper divisors (2310152221).

68793038819 is a wasteful number, since it uses less digits than its factorization.

68793038819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17634849.

The product of its (nonzero) digits is 15676416, while the sum is 62.

The spelling of 68793038819 in words is "sixty-eight billion, seven hundred ninety-three million, thirty-eight thousand, eight hundred nineteen".

Divisors: 1 47 83 3901 17634719 828831793 1463681677 68793038819