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20153020054 = 2192919195747
BaseRepresentation
bin10010110001001101…
…101010111010010110
31221000111110111022011
4102301031222322112
5312233133120204
613131433054434
71312260562336
oct226115527226
957014414264
1020153020054
118601944282
123aa525741a
131b922c334b
14d927590c6
157ce3e5304
hex4b136ae96

20153020054 has 32 divisors (see below), whose sum is σ = 33090508800. Its totient is φ = 9168636960.

The previous prime is 20153019979. The next prime is 20153020057. The reversal of 20153020054 is 45002035102.

It is a super-2 number, since 2×201530200542 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153020057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162609 + ... + 258355.

It is an arithmetic number, because the mean of its divisors is an integer number (1034078400).

Almost surely, 220153020054 is an apocalyptic number.

20153020054 is a deficient number, since it is larger than the sum of its proper divisors (12937488746).

20153020054 is a wasteful number, since it uses less digits than its factorization.

20153020054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95988.

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20153020054 its reverse (45002035102), we get a palindrome (65155055156).

The spelling of 20153020054 in words is "twenty billion, one hundred fifty-three million, twenty thousand, fifty-four".

Divisors: 1 2 19 29 38 58 191 382 551 1102 3629 5539 7258 11078 95747 105241 191494 210482 1819193 2776663 3638386 5553326 18287677 36575354 52756597 105513194 347465863 530342633 694931726 1060685266 10076510027 20153020054