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81364877846318 = 2113698403538469
BaseRepresentation
bin10010100000000000111100…
…101001000010011100101110
3101200002101222020022112211002
4102200000330221002130232
541131040232212040233
6445014301525400302
723065263344313023
oct2240007451023456
9350071866275732
1081364877846318
1123a1a718403540
129161084b69092
1336528a1146121
14161411c77754a
159617494396e8
hex4a003ca4272e

81364877846318 has 8 divisors (see below), whose sum is σ = 133142527384920. Its totient is φ = 36984035384680.

The previous prime is 81364877846279. The next prime is 81364877846339.

It is a happy number.

81364877846318 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1849201769213 + ... + 1849201769256.

It is an arithmetic number, because the mean of its divisors is an integer number (16642815923115).

Almost surely, 281364877846318 is an apocalyptic number.

81364877846318 is a deficient number, since it is larger than the sum of its proper divisors (51777649538602).

81364877846318 is a wasteful number, since it uses less digits than its factorization.

81364877846318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698403538482.

The product of its digits is 1040449536, while the sum is 74.

The spelling of 81364877846318 in words is "eighty-one trillion, three hundred sixty-four billion, eight hundred seventy-seven million, eight hundred forty-six thousand, three hundred eighteen".

Divisors: 1 2 11 22 3698403538469 7396807076938 40682438923159 81364877846318