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97157386180 = 2254857869309
BaseRepresentation
bin101101001111100001…
…0000000111111000100
3100021210001202121011101
41122133002000333010
53042434242324210
6112344455545444
710006436104441
oct1323702007704
9307701677141
1097157386180
11382278a2288
12169b598b284
13921491202a
1449b97069c8
1527d98d3a3a
hex169f080fc4

97157386180 has 12 divisors (see below), whose sum is σ = 204030511020. Its totient is φ = 38862954464.

The previous prime is 97157386153. The next prime is 97157386187. The reversal of 97157386180 is 8168375179.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15973420996 + 81183965184 = 126386^2 + 284928^2 .

It is not an unprimeable number, because it can be changed into a prime (97157386187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2428934635 + ... + 2428934674.

It is an arithmetic number, because the mean of its divisors is an integer number (17002542585).

Almost surely, 297157386180 is an apocalyptic number.

It is an amenable number.

97157386180 is an abundant number, since it is smaller than the sum of its proper divisors (106873124840).

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

97157386180 is a wasteful number, since it uses less digits than its factorization.

97157386180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857869318 (or 4857869316 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 97157386180 in words is "ninety-seven billion, one hundred fifty-seven million, three hundred eighty-six thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 4857869309 9715738618 19431477236 24289346545 48578693090 97157386180