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78830831059 = 791397178839
BaseRepresentation
bin100100101101010101…
…1110000010111010011
321112110212010010201121
41021122223300113103
52242421143043214
6100114150143111
75460334002541
oct1113253602723
9245425103647
1078830831059
1130482a49162
1213340351a97
137583b46986
143b5b792d91
1520b5a23424
hex125aaf05d3

78830831059 has 8 divisors (see below), whose sum is σ = 80403008000. Its totient is φ = 77273012232.

The previous prime is 78830831047. The next prime is 78830831069. The reversal of 78830831059 is 95013803887.

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

It is a cyclic number.

It is not a de Polignac number, because 78830831059 - 27 = 78830830931 is a prime.

It is a super-2 number, since 2×788308310592 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78830830997 and 78830831015.

It is not an unprimeable number, because it can be changed into a prime (78830831069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3578439 + ... + 3600400.

It is an arithmetic number, because the mean of its divisors is an integer number (10050376000).

Almost surely, 278830831059 is an apocalyptic number.

78830831059 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

78830831059 is a deficient number, since it is larger than the sum of its proper divisors (1572176941).

78830831059 is a wasteful number, since it uses less digits than its factorization.

78830831059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7179057.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 78830831059 in words is "seventy-eight billion, eight hundred thirty million, eight hundred thirty-one thousand, fifty-nine".

Divisors: 1 79 139 10981 7178839 567128281 997858621 78830831059