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23190250655 = 5111332433917
BaseRepresentation
bin10101100110001111…
…110010010010011111
32012212011112210102102
4111212033302102133
5334443201010110
614353051315315
71450450610135
oct254617622237
965764483372
1023190250655
119920323610
1245b244bb3b
132257611a10
14119dc93755
1590ad905a5
hex5663f249f

23190250655 has 16 divisors (see below), whose sum is σ = 32693389344. Its totient is φ = 15568279680.

The previous prime is 23190250651. The next prime is 23190250729. The reversal of 23190250655 is 55605209132.

It is not a de Polignac number, because 23190250655 - 22 = 23190250651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23190250651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16216244 + ... + 16217673.

It is an arithmetic number, because the mean of its divisors is an integer number (2043336834).

Almost surely, 223190250655 is an apocalyptic number.

23190250655 is a deficient number, since it is larger than the sum of its proper divisors (9503138689).

23190250655 is a wasteful number, since it uses less digits than its factorization.

23190250655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32433946.

The product of its (nonzero) digits is 81000, while the sum is 38.

Adding to 23190250655 its reverse (55605209132), we get a palindrome (78795459787).

The spelling of 23190250655 in words is "twenty-three billion, one hundred ninety million, two hundred fifty thousand, six hundred fifty-five".

Divisors: 1 5 11 13 55 65 143 715 32433917 162169585 356773087 421640921 1783865435 2108204605 4638050131 23190250655