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85791698419 = 712255956917
BaseRepresentation
bin100111111100110010…
…1010110110111110011
322012102222012211121211
41033321211112313303
52401200133322134
6103225005500551
76124666255510
oct1177145266763
9265388184554
1085791698419
11334251a48a9
1214763571757
138122ccaabb
14421c044307
152371bac764
hex13f9956df3

85791698419 has 4 divisors (see below), whose sum is σ = 98047655344. Its totient is φ = 73535741496.

The previous prime is 85791698407. The next prime is 85791698429. The reversal of 85791698419 is 91489619758.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91489619758 = 245744809879.

It is not a de Polignac number, because 85791698419 - 213 = 85791690227 is a prime.

It is a super-2 number, since 2×857916984192 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85791698429) 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, 6127978452 + ... + 6127978465.

It is an arithmetic number, because the mean of its divisors is an integer number (24511913836).

Almost surely, 285791698419 is an apocalyptic number.

85791698419 is a deficient number, since it is larger than the sum of its proper divisors (12255956925).

85791698419 is a wasteful number, since it uses less digits than its factorization.

85791698419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12255956924.

The product of its digits is 39191040, while the sum is 67.

The spelling of 85791698419 in words is "eighty-five billion, seven hundred ninety-one million, six hundred ninety-eight thousand, four hundred nineteen".

Divisors: 1 7 12255956917 85791698419