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20950888007 = 7231671391481
BaseRepresentation
bin10011100000110001…
…010010111001000111
32000002002210101101002
4103200301102321013
5320401411404012
613342534123515
71341116416100
oct234061227107
960062711332
1020950888007
118981259285
1240884b059b
131c8b6aa96a
14102a6cb3a7
1582949a7c2
hex4e0c52e47

20950888007 has 48 divisors (see below), whose sum is σ = 25734159360. Its totient is φ = 16984598400.

The previous prime is 20950888001. The next prime is 20950888051. The reversal of 20950888007 is 70088805902.

It is not a de Polignac number, because 20950888007 - 216 = 20950822471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20950888001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14145707 + ... + 14147187.

It is an arithmetic number, because the mean of its divisors is an integer number (536128320).

Almost surely, 220950888007 is an apocalyptic number.

20950888007 is a deficient number, since it is larger than the sum of its proper divisors (4783271353).

20950888007 is a wasteful number, since it uses less digits than its factorization.

20950888007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732 (or 1725 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 20950888007 in words is "twenty billion, nine hundred fifty million, eight hundred eighty-eight thousand, seven".

Divisors: 1 7 31 49 67 139 217 469 973 1481 1519 2077 3283 4309 6811 9313 10367 14539 30163 45911 65191 72569 99227 101773 205859 211141 288703 321377 456337 694589 1441013 2020921 2249639 3076037 4862123 6381629 10087091 13792553 14146447 21532259 44671403 96547871 150725813 312699821 427569143 675835097 2992984001 20950888007