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20382371875 = 5513149789
BaseRepresentation
bin10010111110111000…
…100101000000100011
31221121111000202212001
4102332320211000203
5313220341400000
613210304544431
71321044205465
oct227670450043
957544022761
1020382371875
11870a354738
123b4a022117
131bca986598
14db4dbc135
157e45eb46a
hex4bee25023

20382371875 has 24 divisors (see below), whose sum is σ = 25671325680. Its totient is φ = 16181100000.

The previous prime is 20382371819. The next prime is 20382371881. The reversal of 20382371875 is 57817328302.

It is not a de Polignac number, because 20382371875 - 229 = 19845500963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384481 + ... + 434269.

It is an arithmetic number, because the mean of its divisors is an integer number (1069638570).

Almost surely, 220382371875 is an apocalyptic number.

20382371875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20382371875 is a deficient number, since it is larger than the sum of its proper divisors (5288953805).

20382371875 is an frugal number, since it uses more digits than its factorization.

20382371875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49945 (or 49925 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 20382371875 in words is "twenty billion, three hundred eighty-two million, three hundred seventy-one thousand, eight hundred seventy-five".

Divisors: 1 5 25 125 131 625 655 3125 3275 16375 49789 81875 248945 409375 1244725 6223625 6522359 31118125 32611795 155590625 163058975 815294875 4076474375 20382371875