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118641203213 = 1328597319133
BaseRepresentation
bin110111001111110010…
…0010001100000001101
3102100020022100120201112
41232133210101200031
53420434122000323
6130300352421405
711400016405511
oct1563744214015
9370208316645
10118641203213
1146351958a75
121abb0847865
13b259833cc0
145a56abc141
153145a4e178
hex1b9f91180d

118641203213 has 8 divisors (see below), whose sum is σ = 127772317848. Its totient is φ = 109510784064.

The previous prime is 118641203189. The next prime is 118641203251. The reversal of 118641203213 is 312302146811.

It can be written as a sum of positive squares in 4 ways, for example, as 7897343689 + 110743859524 = 88867^2 + 332782^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118641203213 - 222 = 118637008909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118641203213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118641203113) 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, 212195 + ... + 531327.

It is an arithmetic number, because the mean of its divisors is an integer number (15971539731).

Almost surely, 2118641203213 is an apocalyptic number.

118641203213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

118641203213 is a deficient number, since it is larger than the sum of its proper divisors (9131114635).

118641203213 is a wasteful number, since it uses less digits than its factorization.

118641203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347743.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 118641203213 in words is "one hundred eighteen billion, six hundred forty-one million, two hundred three thousand, two hundred thirteen".

Divisors: 1 13 28597 319133 371761 4148729 9126246401 118641203213