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20783574010941 = 374348871470957
BaseRepresentation
bin1001011100111000011011…
…00010111100110000111101
32201120220001000012112201020
410232130031202330300331
510211004224421322231
6112111501520334353
74243364224146660
oct456341542746075
981526030175636
1020783574010941
11669329a780065
1223b7bb4a743b9
13b79b62166451
1451bd04c436d7
15260966088396
hex12e70d8bcc3d

20783574010941 has 32 divisors (see below), whose sum is σ = 32407456401408. Its totient is φ = 11599872338880.

The previous prime is 20783574010799. The next prime is 20783574010949. The reversal of 20783574010941 is 14901047538702.

It is not a de Polignac number, because 20783574010941 - 29 = 20783574010429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20783574010949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43895035 + ... + 44365991.

It is an arithmetic number, because the mean of its divisors is an integer number (1012733012544).

Almost surely, 220783574010941 is an apocalyptic number.

20783574010941 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20783574010941 is a deficient number, since it is larger than the sum of its proper divisors (11623882390467).

20783574010941 is a wasteful number, since it uses less digits than its factorization.

20783574010941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519881.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 20783574010941 in words is "twenty trillion, seven hundred eighty-three billion, five hundred seventy-four million, ten thousand, nine hundred forty-one".

Divisors: 1 3 7 21 43 129 301 903 48871 146613 342097 470957 1026291 1412871 2101453 3296699 6304359 9890097 14710171 20251151 44130513 60753453 141758057 425274171 23016139547 69048418641 161112976829 483338930487 989694000521 2969082001563 6927858003647 20783574010941