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108161755212 = 22372389538987
BaseRepresentation
bin110010010111011110…
…0010110100001001100
3101100011222102110120210
41210232330112201030
53233003402131322
6121404441442420
710546230515130
oct1445674264114
9340158373523
10108161755212
1141964544645
1218b671a0410
13a2797091b4
145340dd33c0
152c30a3770c
hex192ef1684c

108161755212 has 48 divisors (see below), whose sum is σ = 288552615680. Its totient is φ = 30890365632.

The previous prime is 108161755211. The next prime is 108161755279. The reversal of 108161755212 is 212557161801.

It is not an unprimeable number, because it can be changed into a prime (108161755211) 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, 68818 + ... + 470169.

Almost surely, 2108161755212 is an apocalyptic number.

108161755212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

108161755212 is an abundant number, since it is smaller than the sum of its proper divisors (180390860468).

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

108161755212 is a wasteful number, since it uses less digits than its factorization.

108161755212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541390 (or 541388 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 39.

The spelling of 108161755212 in words is "one hundred eight billion, one hundred sixty-one million, seven hundred fifty-five thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 2389 4778 7167 9556 14334 16723 28668 33446 50169 66892 100338 200676 538987 1077974 1616961 2155948 3233922 3772909 6467844 7545818 11318727 15091636 22637454 45274908 1287639943 2575279886 3862919829 5150559772 7725839658 9013479601 15451679316 18026959202 27040438803 36053918404 54080877606 108161755212