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130021755360 = 2535749977549
BaseRepresentation
bin111100100010111100…
…1101000100111100000
3110102121102212112100220
41321011321220213200
54112241032132420
6135421533243040
712252026454030
oct1710571504740
9412542775326
10130021755360
1150161989272
1221248033480
13c351550c23
14641632d8c0
1535aec0e840
hex1e45e689e0

130021755360 has 192 divisors, whose sum is σ = 469022400000. Its totient is φ = 29659318272.

The previous prime is 130021755349. The next prime is 130021755361. The reversal of 130021755360 is 63557120031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130021755361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1637866 + ... + 1715414.

It is an arithmetic number, because the mean of its divisors is an integer number (2442825000).

Almost surely, 2130021755360 is an apocalyptic number.

130021755360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130021755360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234511200000).

130021755360 is an abundant number, since it is smaller than the sum of its proper divisors (339000644640).

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

130021755360 is a wasteful number, since it uses less digits than its factorization.

130021755360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78073 (or 78065 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

Adding to 130021755360 its reverse (63557120031), we get a palindrome (193578875391).

The spelling of 130021755360 in words is "one hundred thirty billion, twenty-one million, seven hundred fifty-five thousand, three hundred sixty".