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20163731023252 = 227211776989869
BaseRepresentation
bin1001001010110101111000…
…00001100110010110010100
32122101122010002021021101001
410211122330001212112110
510120330310120221002
6110515031250113044
74150532023531615
oct445327401462624
978348102237331
1020163731023252
11647443254a193
122317a4887b784
13b3357c516c0b
144d9d034a9c0c
1524e789166a87
hex1256bc066594

20163731023252 has 12 divisors (see below), whose sum is σ = 35286583268020. Its totient is φ = 10081850089536.

The previous prime is 20163731023231. The next prime is 20163731023279. The reversal of 20163731023252 is 25232013736102.

It can be written as a sum of positive squares in 2 ways, for example, as 15452556588676 + 4711174434576 = 3930974^2 + 2170524^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610227 + ... + 6379642.

Almost surely, 220163731023252 is an apocalyptic number.

It is an amenable number.

20163731023252 is a deficient number, since it is larger than the sum of its proper divisors (15122852244768).

20163731023252 is a wasteful number, since it uses less digits than its factorization.

20163731023252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711050 (or 7711048 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

Adding to 20163731023252 its reverse (25232013736102), we get a palindrome (45395744759354).

The spelling of 20163731023252 in words is "twenty trillion, one hundred sixty-three billion, seven hundred thirty-one million, twenty-three thousand, two hundred fifty-two".

Divisors: 1 2 4 721177 1442354 2884708 6989869 13979738 27959476 5040932755813 10081865511626 20163731023252