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109110910020 = 22357259787881
BaseRepresentation
bin110010110011110000…
…1000101110001000100
3101102122010102112012120
41211213201011301010
53241424343110040
6122042545245540
710611604301250
oct1454741056104
9342563375176
10109110910020
114230129a702
12191910338b0
13a39b253368
1453d10a7260
152c890237d0
hex1967845c44

109110910020 has 48 divisors (see below), whose sum is σ = 349154913408. Its totient is φ = 24939636480.

The previous prime is 109110909997. The next prime is 109110910021. The reversal of 109110910020 is 20019011901.

It is not an unprimeable number, because it can be changed into a prime (109110910021) 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, 129893521 + ... + 129894360.

It is an arithmetic number, because the mean of its divisors is an integer number (7274060696).

Almost surely, 2109110910020 is an apocalyptic number.

109110910020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109110910020 is an abundant number, since it is smaller than the sum of its proper divisors (240044003388).

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

109110910020 is a wasteful number, since it uses less digits than its factorization.

109110910020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259787900 (or 259787898 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 24.

Adding to 109110910020 its reverse (20019011901), we get a palindrome (129129921921).

The spelling of 109110910020 in words is "one hundred nine billion, one hundred ten million, nine hundred ten thousand, twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 259787881 519575762 779363643 1039151524 1298939405 1558727286 1818515167 2597878810 3117454572 3637030334 3896818215 5195757620 5455545501 7274060668 7793636430 9092575835 10911091002 15587272860 18185151670 21822182004 27277727505 36370303340 54555455010 109110910020