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22799911681 = 137173961981
BaseRepresentation
bin10101001110111110…
…110000101100000001
32011211222001112000101
4111032332300230001
5333143234133211
614250225122401
71435001023501
oct251676605401
964758045011
1022799911681
11973aa57118
124503789401
1321c47a3901
1411640c5a01
158d69895c1
hex54efb0b01

22799911681 has 8 divisors (see below), whose sum is σ = 23099111784. Its totient is φ = 22502636160.

The previous prime is 22799911633. The next prime is 22799911691. The reversal of 22799911681 is 18611999722.

It can be written as a sum of positive squares in 4 ways, for example, as 8090103025 + 14709808656 = 89945^2 + 121284^2 .

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 22799911681 - 217 = 22799780609 is a prime.

It is a super-2 number, since 2×227999116812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22799911691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457290 + ... + 504691.

It is an arithmetic number, because the mean of its divisors is an integer number (2887388973).

Almost surely, 222799911681 is an apocalyptic number.

It is an amenable number.

22799911681 is a deficient number, since it is larger than the sum of its proper divisors (299200103).

22799911681 is a wasteful number, since it uses less digits than its factorization.

22799911681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962291.

The product of its digits is 979776, while the sum is 55.

The spelling of 22799911681 in words is "twenty-two billion, seven hundred ninety-nine million, nine hundred eleven thousand, six hundred eighty-one".

Divisors: 1 137 173 23701 961981 131791397 166422713 22799911681