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20385938395 = 532587125117
BaseRepresentation
bin10010111111000110…
…001011101111011011
31221121201201222012101
4102333012023233123
5313222300012040
613210513224231
71321116421504
oct227706135733
957551658171
1020385938395
118711370279
123b4b262077
131bcb634a54
14db5669bab
157e4aa309a
hex4bf18bbdb

20385938395 has 8 divisors (see below), whose sum is σ = 24464072304. Its totient is φ = 16308119904.

The previous prime is 20385938393. The next prime is 20385938411. The reversal of 20385938395 is 59383958302.

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 20385938395 - 21 = 20385938393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20385938393) 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, 100377 + ... + 225493.

It is an arithmetic number, because the mean of its divisors is an integer number (3058009038).

Almost surely, 220385938395 is an apocalyptic number.

20385938395 is a deficient number, since it is larger than the sum of its proper divisors (4078133909).

20385938395 is a wasteful number, since it uses less digits than its factorization.

20385938395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157709.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 20385938395 in words is "twenty billion, three hundred eighty-five million, nine hundred thirty-eight thousand, three hundred ninety-five".

Divisors: 1 5 32587 125117 162935 625585 4077187679 20385938395