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34891619005 = 56978323801
BaseRepresentation
bin100000011111101100…
…111101101010111101
310100001122201220011101
4200133230331222331
51032424223302010
624010132253101
72343434603515
oct403754755275
9110048656141
1034891619005
1113885455871
126919171191
1333a0937509
14198dd76845
15d932c273a
hex81fb3dabd

34891619005 has 4 divisors (see below), whose sum is σ = 41869942812. Its totient is φ = 27913295200.

The previous prime is 34891619003. The next prime is 34891619017. The reversal of 34891619005 is 50091619843.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50091619843 = 143334955771.

It can be written as a sum of positive squares in 2 ways, for example, as 4753964601 + 30137654404 = 68949^2 + 173602^2 .

It is not a de Polignac number, because 34891619005 - 21 = 34891619003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34891619003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3489161896 + ... + 3489161905.

It is an arithmetic number, because the mean of its divisors is an integer number (10467485703).

Almost surely, 234891619005 is an apocalyptic number.

It is an amenable number.

34891619005 is a deficient number, since it is larger than the sum of its proper divisors (6978323807).

34891619005 is an equidigital number, since it uses as much as digits as its factorization.

34891619005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6978323806.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 34891619005 in words is "thirty-four billion, eight hundred ninety-one million, six hundred nineteen thousand, five".

Divisors: 1 5 6978323801 34891619005