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20750386719 = 343160855711
BaseRepresentation
bin10011010100110100…
…011100011000011111
31222120010111212022110
4103110310130120133
5314444044333334
613311012445103
71333133243166
oct232464343037
958503455273
1020750386719
118889063737
124031319793
131c58ca944a
14100bc183dd
15816a92ae9
hex4d4d1c61f

20750386719 has 8 divisors (see below), whose sum is σ = 28310605312. Its totient is φ = 13511879640.

The previous prime is 20750386687. The next prime is 20750386747. The reversal of 20750386719 is 91768305702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20750386719 - 25 = 20750386687 is a prime.

It is a super-2 number, since 2×207503867192 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20750386619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80427727 + ... + 80427984.

It is an arithmetic number, because the mean of its divisors is an integer number (3538825664).

Almost surely, 220750386719 is an apocalyptic number.

20750386719 is a deficient number, since it is larger than the sum of its proper divisors (7560218593).

20750386719 is a wasteful number, since it uses less digits than its factorization.

20750386719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160855757.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 20750386719 in words is "twenty billion, seven hundred fifty million, three hundred eighty-six thousand, seven hundred nineteen".

Divisors: 1 3 43 129 160855711 482567133 6916795573 20750386719