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830979438685 = 51115108717067
BaseRepresentation
bin11000001011110100011…
…10111111100001011101
32221102220101102021122121
430011322032333201131
5102103321214014220
61433425141142541
7114015305454154
oct14057216774135
92842811367577
10830979438685
112a0464258590
121150713baa51
136049022cb96
142c3108c859b
1516937dd9eaa
hexc17a3bf85d

830979438685 has 8 divisors (see below), whose sum is σ = 1087827628896. Its totient is φ = 604348682640.

The previous prime is 830979438673. The next prime is 830979438703. The reversal of 830979438685 is 586834979038.

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

It is not a de Polignac number, because 830979438685 - 29 = 830979438173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7554358479 + ... + 7554358588.

It is an arithmetic number, because the mean of its divisors is an integer number (135978453612).

Almost surely, 2830979438685 is an apocalyptic number.

It is an amenable number.

830979438685 is a deficient number, since it is larger than the sum of its proper divisors (256848190211).

830979438685 is a wasteful number, since it uses less digits than its factorization.

830979438685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15108717083.

The product of its (nonzero) digits is 313528320, while the sum is 70.

The spelling of 830979438685 in words is "eight hundred thirty billion, nine hundred seventy-nine million, four hundred thirty-eight thousand, six hundred eighty-five".

Divisors: 1 5 11 55 15108717067 75543585335 166195887737 830979438685