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2161100011612 = 222381226910963
BaseRepresentation
bin11111011100101011100…
…110010011100001011100
321122121011202221101012211
4133130223212103201130
5240401413100332422
64332443505210204
7312064034003143
oct37345346234134
97577152841184
102161100011612
11763576686a53
122aaa04030964
13128a38687029
147685250675a
153b336304577
hex1f72b99385c

2161100011612 has 12 divisors (see below), whose sum is σ = 3783513413736. Its totient is φ = 1080096179120.

The previous prime is 2161100011607. The next prime is 2161100011613.

It is a happy number.

2161100011612 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161100011613) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 113445958 + ... + 113465005.

It is an arithmetic number, because the mean of its divisors is an integer number (315292784478).

Almost surely, 22161100011612 is an apocalyptic number.

It is an amenable number.

2161100011612 is a deficient number, since it is larger than the sum of its proper divisors (1622413402124).

2161100011612 is a wasteful number, since it uses less digits than its factorization.

2161100011612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226913348 (or 226913346 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

It can be divided in two parts, 21611000 and 11612, that added together give a palindrome (21622612).

The spelling of 2161100011612 in words is "two trillion, one hundred sixty-one billion, one hundred million, eleven thousand, six hundred twelve".

Divisors: 1 2 4 2381 4762 9524 226910963 453821926 907643852 540275002903 1080550005806 2161100011612