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51100016060 = 2257335000011
BaseRepresentation
bin101111100101110011…
…000101110110111100
311212220020200202222102
4233211303011312330
51314123101003220
635250334404232
73456206653442
oct574563056674
9155806622872
1051100016060
111a742699435
129aa1360678
134a84927ac2
14268a874b92
1514e1230775
hexbe5cc5dbc

51100016060 has 24 divisors (see below), whose sum is σ = 108780037296. Its totient is φ = 20160005760.

The previous prime is 51100016047. The next prime is 51100016063. The reversal of 51100016060 is 6061000115.

It is a happy number.

It is a super-2 number, since 2×511000160602 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100016063) 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, 17498546 + ... + 17501465.

It is an arithmetic number, because the mean of its divisors is an integer number (4532501554).

Almost surely, 251100016060 is an apocalyptic number.

It is an amenable number.

51100016060 is an abundant number, since it is smaller than the sum of its proper divisors (57680021236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51100016060 is a wasteful number, since it uses less digits than its factorization.

51100016060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35000093 (or 35000091 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 51100016060 its reverse (6061000115), we get a palindrome (57161016175).

The spelling of 51100016060 in words is "fifty-one billion, one hundred million, sixteen thousand, sixty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 35000011 70000022 140000044 175000055 350000110 700000220 2555000803 5110001606 10220003212 12775004015 25550008030 51100016060