Search a number
-
+
30351664805 = 571133717609
BaseRepresentation
bin11100010001000110…
…011010011010100101
32220100021000022210112
4130101012122122211
5444130011233210
621535433302405
72123066615450
oct342106323245
986307008715
1030351664805
11119657a6000
125a70864a05
132b291b1c97
14167d02a497
15bc9940d05
hex71119a6a5

30351664805 has 64 divisors (see below), whose sum is σ = 47024616960. Its totient is φ = 18408107520.

The previous prime is 30351664793. The next prime is 30351664843. The reversal of 30351664805 is 50846615303.

It is not a de Polignac number, because 30351664805 - 220 = 30350616229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1714841 + ... + 1732449.

It is an arithmetic number, because the mean of its divisors is an integer number (734759640).

Almost surely, 230351664805 is an apocalyptic number.

30351664805 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30351664805 is a deficient number, since it is larger than the sum of its proper divisors (16672952155).

30351664805 is a wasteful number, since it uses less digits than its factorization.

30351664805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17691 (or 17669 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 30351664805 in words is "thirty billion, three hundred fifty-one million, six hundred sixty-four thousand, eight hundred five".

Divisors: 1 5 7 11 35 37 55 77 121 185 259 385 407 605 847 1295 1331 2035 2849 4235 4477 6655 9317 14245 17609 22385 31339 46585 49247 88045 123263 156695 193699 246235 344729 616315 651533 968495 1355893 1723645 2130689 3257665 4560731 6779465 7166863 10653445 14914823 22803655 23437579 35834315 50168041 74574115 78835493 117187895 164063053 250840205 394177465 551848451 820315265 867190423 2759242255 4335952115 6070332961 30351664805