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107188919890 = 25134311913063
BaseRepresentation
bin110001111010011110…
…1010001111001010010
3101020200011212022101221
41203310331101321102
53224010330414030
6121124130315254
710513145533423
oct1436475217122
9336604768357
10107188919890
1141505395008
1218935428b2a
13a152cc05b0
14528bb1764a
152bc541ee7a
hex18f4f51e52

107188919890 has 32 divisors (see below), whose sum is σ = 208263799296. Its totient is φ = 39485599680.

The previous prime is 107188919857. The next prime is 107188919891. The reversal of 107188919890 is 98919881701.

It is a happy number.

107188919890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1071889198902 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (107188919891) 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, 900502 + ... + 1012561.

It is an arithmetic number, because the mean of its divisors is an integer number (6508243728).

Almost surely, 2107188919890 is an apocalyptic number.

107188919890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

107188919890 is a deficient number, since it is larger than the sum of its proper divisors (101074879406).

107188919890 is a wasteful number, since it uses less digits than its factorization.

107188919890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913514.

The product of its (nonzero) digits is 2612736, while the sum is 61.

The spelling of 107188919890 in words is "one hundred seven billion, one hundred eighty-eight million, nine hundred nineteen thousand, eight hundred ninety".

Divisors: 1 2 5 10 13 26 65 130 431 862 2155 4310 5603 11206 28015 56030 1913063 3826126 9565315 19130630 24869819 49739638 124349095 248698190 824530153 1649060306 4122650765 8245301530 10718891989 21437783978 53594459945 107188919890